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Strauss D, Aiello G, Chavan R, Cirant S, deBaar M, Farina D, Gantenbein G, Goodman T, Henderson M, Kasparek W, Kleefeldt K, Landis JD, Meier A, Moro A, Platania P, Plaum B, Poli E, Ramponi G, Ronden D, Saibene G, Sanchez F, Sauter O, Scherer T, Schreck S, Serikov A, Sozzi C, Spaeh P, Vaccaro A, Zohm H. Preliminary design of the ITER ECH Upper Launcher. FUSION ENGINEERING AND DESIGN 2013. [DOI: 10.1016/j.fusengdes.2013.03.040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Brown L, Sanchez F, Kosson D, Arnold J. Performance of carbon nanofiber-cement composites subjected to accelerated decalcification. EPJ WEB OF CONFERENCES 2013. [DOI: 10.1051/epjconf/20135602005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Sanchez F, Lopes-Costa T, Montilla F, Roldan E, Lopez-Cornejo P. On the applicability of the two state (pseudophase) model to photochemical reactions under restricted geometry conditions. J Photochem Photobiol A Chem 2012. [DOI: 10.1016/j.jphotochem.2012.08.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tasset I, Aguera E, Gascon F, Giraldo AI, Salcedo M, Cruz AH, Sanchez F, Tunez I. [Natalizumab and reduction of carbonylated proteins in patients with multiple sclerosis]. Rev Neurol 2012; 54:449-452. [PMID: 22492096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
INTRODUCTION The sensitivity of the central nervous system to oxidative damage and its relationship with inflammatory response are well known. Recent studies have shown that oxidative stress is present in the establishment and development of multiple sclerosis (MS). One of the most recent treatments in this process is natalizumab, a monoclonal antibody. AIM To evaluate whether the therapeutic effect of natalizumab is associated with the severity of the disease and the oxidative damage. PATIENTS AND METHODS Researchers recruited twenty patients with relapsing-remitting MS (RRMS) undergoing therapy with natalizumab and distributed, according to the Expanded Disability Status Scale (EDSS), in two groups: RRMS-1 (EDSS < 5) and RRMS-2 (EDSS ≥ 5). Blood samples were taken for an oxidative profile study. RESULTS Data showed a decrease in carbonylated proteins following treatment with natalizumab. The reduction in oxidative damage rated as protein oxidation is significant between the previous (baseline) situation of the patient and after 14 months' treatment. The most significant decrease coincided with the patients with the highest levels of severity in the process. Although it has not been possible to establish a correlation, the statistical significance is higher for patients in the RRMS-2 group treated with natalizumab. The antioxidant systems, on the other hand, did not display any statistically significant changes. CONCLUSIONS Natalizumab brings about a reduction in carbonylated protein levels.
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Testa D, Carfantan H, Toussaint M, Chavan R, Fournier Y, Guterl J, Lister J, Maeder T, Moret JM, Perez A, Sanchez F, Schaller B, Slater C, Stoeck M, Tonetti G. Assessment of the ITER high-frequency magnetic diagnostic set. FUSION ENGINEERING AND DESIGN 2011. [DOI: 10.1016/j.fusengdes.2011.03.118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Omori T, Henderson M, Albajar F, Alberti S, Baruah U, Bigelow T, Beckett B, Bertizzolo R, Bonicelli T, Bruschi A, Caughman J, Chavan R, Cirant S, Collazos A, Cox D, Darbos C, de Baar M, Denisov G, Farina D, Gandini F, Gassmann T, Goodman T, Heidinger R, Hogge J, Illy S, Jean O, Jin J, Kajiwara K, Kasparek W, Kasugai A, Kern S, Kobayashi N, Kumric H, Landis J, Moro A, Nazare C, Oda Y, Pagonakis I, Piosczyk B, Platania P, Plaum B, Poli E, Porte L, Purohit D, Ramponi G, Rao S, Rasmussen D, Ronden D, Rzesnicki T, Saibene G, Sakamoto K, Sanchez F, Scherer T, Shapiro M, Sozzi C, Spaeh P, Strauss D, Sauter O, Takahashi K, Temkin R, Thumm M, Tran M, Udintsev V, Zohm H. Overview of the ITER EC H&CD system and its capabilities. FUSION ENGINEERING AND DESIGN 2011. [DOI: 10.1016/j.fusengdes.2011.02.040] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Guerrero-González ML, Rodríguez-Kessler M, Rodríguez-Guerra R, González-Chavira M, Simpson J, Sanchez F, Jiménez-Bremont JF. Differential expression of Phaseolus vulgaris genes induced during the interaction with Rhizoctonia solani. PLANT CELL REPORTS 2011; 30:1465-73. [PMID: 21416283 DOI: 10.1007/s00299-011-1055-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2010] [Revised: 02/08/2011] [Accepted: 02/24/2011] [Indexed: 05/22/2023]
Abstract
Common bean (Phaseolus vulgaris L.) is the most important grain legume for direct human consumption; however, bean production is affected by several diseases such as Rhizoctonia root rot. Few bean cultivars have been identified that effectively resist the attack of this fungus. Herein, we used the P. vulgaris Pv-2094 landrace, which is less susceptible to Rhizoctonia root rot, for the construction of a suppressive subtractive hybridization cDNA library in order to isolate plant defense-related genes. Total RNAs obtained after 8 and 16 h from inoculated and non-inoculated roots with R. solani Kühn, were used as the source of the "tester" and the "driver" samples, respectively. A total of 136 unigenes were obtained and classified into 12 functional categories. Six unigenes were selected to analyze for differential expression by qRT-PCR, including a receptor-like kinase (PvRK20-1), an acid phosphatase associated to defense (PA), a pathogenesis related protein (PR1), an ethylene responsive factor (ERF), a polygalacturonase inhibitor protein (PGIP), and an alpha-dioxygenase (α-DOX). These genes were found to be differentially expressed in a time-dependent manner in bean roots during the interaction with R. solani. Data generated from this study will contribute to the understanding of the molecular mechanisms associated with plant defense against root rot in common bean.
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Korine C, Sanchez F, Pinshow B. Effects of Ethanol on Food Consumption and Skin Temperature in the Egyptian Fruit Bat (Rousettus aegyptiacus). Integr Comp Biol 2011; 51:432-40. [DOI: 10.1093/icb/icr012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Gurgui M, Sanchez F, March F, Lopez-Contreras J, Martino R, Cotura A, Galvez ML, Roig C, Coll P. Nosocomial outbreak of Blastoschizomyces capitatus associated with contaminated milk in a haematological unit. J Hosp Infect 2011; 78:274-8. [PMID: 21658800 DOI: 10.1016/j.jhin.2011.01.027] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2010] [Accepted: 01/24/2011] [Indexed: 11/20/2022]
Abstract
In July 2002, Blastoschizomyces capitatus was isolated from four neutropenic patients in a haematology unit. Two patients died due to disseminated infection while the other two had oropharyngeal colonisation. Nosocomial acquisition of the fungus was suspected and epidemiological and environmental studies were undertaken. To determine the potential source for the acquisition of the fungus, epidemiological relationships between the patients were investigated. We performed surveillance cultures on all patients and took environmental cultures of air, inanimate surfaces, food samples, blood products and chemotherapy drugs. No direct contact transmission between patients was found and B. capitatus was isolated only in vacuum flasks used for breakfast milk distribution. All isolates were compared by four independent molecular typing methods: pulsed-field gel electrophoresis, genomic DNA restriction endonuclease analysis, randomly amplified polymorphic DNA, and polymerase chain reaction fingerprinting using a single primer specific for one minisatellite or two microsatellite DNAs. Milk vacuum flasks and clinical strains were genetically indistinguishable by all typing techniques. Milk vacuum flasks were withdrawn from all hospital units and no further B. capitatus infection was detected. Our findings suggest that clonal dissemination of a single strain of B. capitatus from vacuum flasks used for milk distribution was responsible for this nosocomial outbreak in the haematological unit.
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Rodríguez D, Almirante B, Cuenca-Estrella M, Rodríguez-Tudela JL, Mensa J, Ayats J, Sanchez F, Pahissa A. Predictors of candidaemia caused by non-albicans Candida species: results of a population-based surveillance in Barcelona, Spain. Clin Microbiol Infect 2011; 16:1676-82. [PMID: 20219079 DOI: 10.1111/j.1469-0691.2010.03208.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Although Candida albicans (CA) is the most common cause of Candida bloodstream infections (BSIs), recent studies have observed an increasing percentage of candidaemias caused by non-albicans Candida species (NAC). In the present study, we attempted to identify the predictors of candidaemia due to NAC compared to CA. We analyzed data from an active population-based surveillance in Barcelona (Spain) from January 2002 to December 2003. Factors associated with NAC fungaemia were determined by multivariate analysis. A total of 339 episodes of Candida BSI, in 336 patients (median age 63 years, interquartile range: 41-72 years), were included. CA was the most commonly isolated (52%), followed by Candida parapsilosis (23%), Candida tropicalis (10%), Candida glabrata (8.6%), Candida krusei (3.4%) and other NAC spp. (3%).Overall, 48% of cases were due to NAC spp. Multivariate logistic regression analysis identified factors associated with a risk of BSI due to NAC spp.: having received a haematologic transplant (OR 10.8; 95% CI 1.31-90.01; p 0.027), previous fluconazole exposure (OR 4.47; 95% CI 2.12-9.43; p <0.001) and neonatal age (OR 4.42; 95% CI 1.63-12.04; p 0.004). Conversely, previous CA colonization (OR 0.33; 95% CI 0.19-0.57; p 0.001) and previous antibiotic use (OR 0.42; 95% CI 0.21-0.85; p 0.017) were associated with CA fungaemia compared to NAC. In conclusion, NAC candidaemia comprised 48% of cases in our series. Predictors of NAC include having received a haematologic transplant, neonatal age and previous fluconazole use.
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Barreiro E, Marín-Corral J, Sanchez F, Mielgo V, Alvarez FJ, Gáldiz JB, Gea J. Reference values of respiratory and peripheral muscle function in rats. J Anim Physiol Anim Nutr (Berl) 2010; 94:e393-401. [DOI: 10.1111/j.1439-0396.2010.01027.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Sanchez P, Sanchez F, Migueles B, Hebles M, Dorado M, Gonzalez M, Aguilera L. 43 IMSI IN NATURAL CYCLE. PRE CONGRESS COURSE: MILD STIMULATION. Reprod Biomed Online 2010. [DOI: 10.1016/s1472-6483(10)62461-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Dorado M, Gonzalez M, Aguilera L, Sanchez F, Sanchez P, Estevez M, Garcia J, Migueles B, Hebles M. 140 IS ROOM TEMPERATURE A CONDITIONAL FACTOR IN THE RESULTS OF ICSI CYCLES? Reprod Biomed Online 2010. [DOI: 10.1016/s1472-6483(10)62558-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Thorneloe SA, Kosson DS, Sanchez F, Garrabrants AC, Helms G. Evaluating the fate of metals in air pollution control residues from coal-fired power plants. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2010; 44:7351-7356. [PMID: 20806888 DOI: 10.1021/es1016558] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Changes in emissions control at U.S. coal-fired power plants will shift metals content from the flue gas to the air pollution control (APC) residues. To determine the potential fate of metals that are captured through use of enhanced APC practices, the leaching behavior of 73 APC residues was characterized following the approach of the Leaching Environmental Assessment Framework. Materials were tested over pH conditions and liquid-solid ratios expected during management via land disposal or beneficial use. Leachate concentrations for most metals were highly variable over a range of coal rank, facility configurations, and APC residue types. Liquid-solid partitioning (equilibrium) as a function of pH showed significantly different leaching behavior for similar residue types and facility configurations. Within a facility, the leaching behavior of blended residues was shown to follow one of four characteristic patterns. Variability in metals leaching was greater than the variability in totals concentrations by several orders of magnitude, inferring that total content is not predictive of leaching behavior. The complex leaching behavior and lack of correlation to total contents indicates that release evaluation under likely field conditions is a better descriptor of environmental performance than totals content or linear partitioning approaches.
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Villa I, Sanchez F, Lopes T, Lopez-Cornejo P, Perez-Tejeda P. Photoinduced Electron-Transfer Reactions: A Study of the Diffusion-Controlled and Activation-Diffusion-Controlled Processes. J Phys Chem A 2010; 114:7912-7. [DOI: 10.1021/jp104681n] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Silva V, Pita Barros P, Lourenco O, Batel Marques F, Martinez-Salazar J, Palumbo A, De La Fuente P, Rodriguez M, Sanchez F, Lizan C, Marqueta J, Espallardo O, Lizan L, Polanco C, Paz S, Haagen EC, Nelen WLDM, Hermens RPMG, Adang EM, Grol RPTM, Kremer JAM, Pinborg A, Hougaard CO, Nyboe Andersen A, Kragh Andersen P, Boivin J, Schmidt L, Moolenaar L, Broekmans FB, van de Veen F, Fauser BCJM, Hompes P, Mol BW, Porcu - Buisson G, Lehert P, Chabert - Orsini V, Giorgetti C, Shirkavand A, Sedigh Sarvestani R, Ezabadi Z, Omani Samani R, Silva Carvalho JL, Santos A, Tabuas I, Braga DPAF, Setti AS, Figueira RCS, Queiroz P, Iaconelli A, Borges E, Fuldeore M, Wu N, Boulanger L, Chwalisz K, Marx S, Scaravelli G, De luca R, D'Aloja P, Vigiliano V, Mayorga JM, Bolli S, Spoletini R, Fiaccavento S, Monzo A, Flores R, Aniorte S, Rubio JM, Peinado I, Pellicer A, Woodward BJ, Sohan K, Dahl E, Ziegler A, Horlbeck S, Strowitzki T, Eggert-Kruse W, Padhy N, Mahla A, Balasubramanyam S, Varma TR, Yellamareddygari S, Willett MJ, Batra S, Farquhar C, Wang YA, Sullivan AE. Posters * Demography, Epidemiology, Registries, and Health Economy. Hum Reprod 2010. [DOI: 10.1093/humrep/de.25.s1.100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Borrell S, Tudó G, Rey E, González-Martín J, Español M, March F, Coll P, Orcau A, Caylà J, Jansà J, Alcaide F, Martín-Casabona N, Salvadó M, Martinez J, Vidal R, Sanchez F, Altet N. Tuberculosis transmission patterns among Spanish-born and foreign-born populations in the city of Barcelona. Clin Microbiol Infect 2010; 16:568-74. [DOI: 10.1111/j.1469-0691.2009.02886.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Marchena M, Sanchez F. Kinetics of Photochemical Reactions under Restricted Geometry Conditions. PROGRESS IN REACTION KINETICS AND MECHANISM 2010. [DOI: 10.3184/146867809x472116] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Kinetics of ground state reactions under restricted geometry conditions have been rationalized generally taking as a basis the Pseudophase Model, whose basic hypothesis is: The distribution of the reactants between the pseudophases is at equilibrium, that is, the rate of the reaction is slow in relation to the rates of entry and exit of the reactant to and from the receptor. However, photochemical reactions are generally very rapid, so the following question emerges: is the Pseudophase Model still applicable to photochemical reactions? To answer this question has been the primary objective of this work in which photochemical reactions in micelles, polymers and cyclodextrins have been reviewed. The lifetime of the fluorophore and the distributions of the quencher and the probe are crucial properties; they must be taken into account to obtain a proper description of the behaviour of a given system. The models of Infelta, Almgren and Quina visualise different scenarios with varied combinations of these properties. It is shown that, in some cases, the Pseudophase Model holds at least formally.
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Swallow E, Barreiro E, Gosker H, Sathyapala S, Sanchez F, Hopkinson N, Moxham J, Schols A, Gea J, Polkey M. Quadriceps muscle strength in scoliosis. Eur Respir J 2009; 34:1429-35. [PMID: 19443534 PMCID: PMC3073323 DOI: 10.1183/09031936.00074008] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Quadriceps muscle weakness is an important component of chronic obstructive pulmonary disease (COPD). We hypothesised that quadriceps weakness would also be a feature of restrictive lung disease due to scoliosis. We studied 10 patients with severe scoliosis (median (interquartile range (IQR)) forced expiratory volume in 1 s (FEV(1))() 35.3 (11)% predicted), 10 patients with severe COPD (FEV(1) 26.5 (9.0)% pred) and 10 healthy age-matched adults. We measured quadriceps strength, exercise capacity and analysed quadriceps muscle biopsies for myosin heavy-chain (MyHC) isoform expression and the presence of oxidative stress. Both groups exhibited quadriceps weakness with median (IQR) maximal voluntary contraction force being 46.0 (17.0) kg, 21.5 (21.0) kg and 31.5 (11.0) kg, respectively (p = 0.02 and 0.04, respectively, for each patient group against controls). Oxidative stress was significantly greater in the quadriceps of both restrictive and COPD patients. The scoliosis patients exhibited a decrease in the proportion of MyHC type I compared with controls; median (IQR) 35.3 (18.5)% compared with 47.7 (9.3)%, p = 0.028. The scoliosis patients also showed an increase in MyHC IIx (26.3 (15.5)% compared with 11.3 (13.0)%, p = 0.01. Quadriceps weakness is a feature of severe scoliosis; the similarities between patients with scoliosis and patients with COPD suggest a common aetiology to quadriceps weakness in both conditions.
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Lopes-Costa T, Sanchez F, Lopez-Cornejo P. Cooperative and noncooperative binding of *Ru(bpy)3(2+) to DNA and SB4.5G dendrimers. J Phys Chem B 2009; 113:9373-8. [PMID: 19537733 DOI: 10.1021/jp902110x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The process *Ru(bpy)(3)(2+) + S(2)O(8)(2-) in two different reaction media, the SB4.5G dendrimer and DNA solutions, was studied. In both media, the receptors have anionic characteristics. This fact will produce a binding of the ruthenium complex to the two receptors by attractive electrostatic interactions. On the contrary, the peroxodisulfate ions will be preferentially located in the aqueous solution due to electrostatic repulsions with the receptors. Despite the similarities of the receptors, some differences are observed in these two reaction media. These differences arise from the fact that the binding of the *Ru(bpy)(3)(2+) complex to DNA shows a negative cooperativity, whereas the binding to the dendrimer is noncooperative in character. The anticooperative character of the binding that happens in DNA solutions becomes noncooperative when an electrolyte, NaNO(3), is added to the medium. This is related to a condensation of the salt's counterions on the surface of the DNA which produces a decrease of the equilibrium constant corresponding to the binding of the complex to the receptor. Therefore, it is shown that the ionic strength of the reaction medium exerts a great influence on the cooperative nature of the ligand/receptor binding. This also explains the different behavior observed in DNA and dendrimer solutions.
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Gallois JL, Charron C, Sanchez F, Pagny G, Houvenaghel MC, Moretti A, Ponz F, Revers F, Caranta C, German-Retana S. Single amino acid changes in the turnip mosaic virus viral genome-linked protein (VPg) confer virulence towards Arabidopsis thaliana mutants knocked out for eukaryotic initiation factors eIF(iso)4E and eIF(iso)4G. J Gen Virol 2009; 91:288-93. [DOI: 10.1099/vir.0.015321-0] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Mayorga C, Blanca M, Moscoso J, Obispo J, del Prado J, Sanchez F, Juarez C. Studies of the Epitopes of Amoxicillin by Monoclonal Antibodies. Int Arch Allergy Immunol 2009; 99:443-445. [DOI: 10.1159/000236307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Martin VI, Lopez-Cornejo P, Sanchez F. Abnormal salt effects on reactions between ions: The coupling of salt and solvent effects. INT J CHEM KINET 2009. [DOI: 10.1002/kin.20434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Villa I, Sanchez F, Perez-Tejeda P. Study of the electron transfer reaction between [Co(EDTA)]−
and [Ru(NH3
)5
py]2+
in methanol-water mixtures. INT J CHEM KINET 2009. [DOI: 10.1002/kin.20443] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Amrani F, Haboucha A, Salhi M, Leblond H, Komarov A, Grelu P, Sanchez F. Passively mode-locked erbium-doped double-clad fiber laser operating at the 322nd harmonic. OPTICS LETTERS 2009; 34:2120-2122. [PMID: 19823521 DOI: 10.1364/ol.34.002120] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We report passive mode locking of a soliton erbium-doped double-clad fiber laser operating at the 322nd harmonic of the fundamental cavity frequency. Repetition rates up to 3 GHz have been obtained with pulses of 1 ps duration and 18 pJ of energy. The supermode suppression at the 322nd harmonic is better than 25 dB. In addition, the transition dynamics from a bunched state of pulses to stable harmonic mode locking is presented, revealing a very long time scale.
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