Gemechu WA, Minoni U, Modotto D, Tonello A, Couderc V. Efficient second-harmonic generation through cascaded optically poled fibers.
OPTICS LETTERS 2023;
48:668-671. [PMID:
36723559 DOI:
10.1364/ol.478085]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 12/25/2022] [Indexed: 06/18/2023]
Abstract
We report the experimental demonstration of efficient second-harmonic generation by splicing optically poled fiber segments. A device made from five segments each 20 cm-long exhibits, at a fundamental average power of 4.2 mW, a maximum increase of 5.5 in the conversion efficiency with respect to a single 20 cm poled fiber, corresponding to a conversion efficiency of 5.4%. For any considered fundamental power, the conversion efficiency at the output of a five-segment device is larger than the efficiency of a single poled fiber having the same length.
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