Kabacinski A, Armougom J, Melkonian JM, Raybaut M, Dherbecourt JB, Godard A, Vasilyeu R, Smirnov V. Wavelength tunable, single-longitudinal-mode optical parametric oscillator with a transversally chirped volume Bragg grating.
OPTICS LETTERS 2020;
45:607-610. [PMID:
32004263 DOI:
10.1364/ol.379581]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 12/17/2019] [Indexed: 06/10/2023]
Abstract
We report on single-longitudinal-mode (SLM) operation of a low-threshold optical parametric oscillator, with a 17 nm tunability near 2 µm. The oscillator uses a MgO:PPLN crystal in Type 0 quasi-phase-matching configuration, pumped by a 1.064 µm SLM laser. Despite the huge acceptance bandwidth near-degeneracy of MgO:PPLN, spectral selection down to a SLM is achieved by combining a volume Bragg reflector and Vernier filtering in nested signal and idler cavities. Tunability over 17 nm is demonstrated owing to a transverse chirp of the grating period of the Bragg reflector.
Collapse