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Proceedings Paper

Characteristics of continuous-wave double-resonant optical parametric oscillators as spectroscopic tools
Author(s): Takeshi Ikegami; Sergey Slyusarev; Shinichi Ohshima
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Paper Abstract

Tuning and output characteristics of widely-tunable, continuous-wave, doubly-resonant optical parametric oscillators (cw-DROs) are reported from a practical viewpoint. Using 5% MgO-doped LiNbO3 as a nonlinear crystal, we fabricated a 532 nm pumped, monolithic cw-DRO which is tunable over 1 octave from 777 nm to 1687 nm. The threshold of the DRO was 10 mW and the DRO produced the signal power of 4 mW and the idler power of 3 mW when it is pumped at 68 mW pump-power. It operated very stably in a single-longitudinal-mode pair of signal and idler without any mode-hopping over 1 day even under free-running condition, owing to the high mechanical stability of the monolithic cavity and the strong thermal self-locking mechanism. By stabilizing the crystal temperature so as to maintain the output power constant, the output power fluctuation was suppressed to 1.3% rms. The arbitrary longitudinal-mode-selection was possible by combining the crystal temperature and the pump-frequency tuning. By the simultaneous control of the crystal temperature and the pump- frequency, the continuous frequency tuning over 500 MHz was achieved.

Paper Details

Date Published: 3 May 2001
PDF: 7 pages
Proc. SPIE 4269, Laser Frequency Stabilization, Standards, Measurement, and Applications, (3 May 2001); doi: 10.1117/12.424473
Show Author Affiliations
Takeshi Ikegami, National Research Lab. of Metrology (Japan)
Sergey Slyusarev, National Research Lab. of Metrology (Japan)
Shinichi Ohshima, National Research Lab. of Metrology (Japan)

Published in SPIE Proceedings Vol. 4269:
Laser Frequency Stabilization, Standards, Measurement, and Applications
John L. Hall; Jun Ye, Editor(s)

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