Abstract
Continuous-wave optical parametric oscillators (OPOs) based on periodically-poled lithium niobate are outstanding light sources because they combine single-frequency operation with a wide tuning range. Studies demonstrate that in singly-resonant systems at high high pump levels, the spectrum of the resonant field comprises additional components [1,2]. Observed frequency shifts of about 45 and 100 cm−1 are attributed to Raman lasing. In contrast to this interpretation, experiments on Raman scattering do not show optical phonons with frequencies below the prominent value of 250 cm−1 [3]. To clarify this, we have used different phase-matching periods of 24.4 to 31.0 μm in our singly-resonant OPO leading to idler wavelengths from 2.33 to 5.32 μm. A frequency shift depending on the poling period would be a non-ambiguous proof that not a Raman effect is observed.
© 2009 IEEE
PDF ArticleMore Like This
LE Myers and WR Bosenberg
WF4 International Quantum Electronics Conference (IQEC) 1996
T. M. J. Kendall, W. A. Clarkson, P. J. Hardman, G. W. Ross, and D. C. Hanna
CMC2 Conference on Lasers and Electro-Optics (CLEO:S&I) 2000
Robert G. Batchko, Dennis R. Weise, Tomas Plettner, Gregory D. Miller, Martin M. Fejer, and Robert L. Byer
TS4 Advanced Solid State Lasers (ASSL) 1997