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- Title
Characteristics of a cw monolithic optical parametric oscillator.
- Authors
Ikegami, T.; Slyusarev, S.; Kurosu, T.; Fukuyama, Y.; Ohshima, S.
- Abstract
Abstract. We developed a doubly resonant, cw monolithic optical parametric oscillator (OPO) characterized by a low threshold and stable long-term operation for use as a light source for optical frequency measurement. We used KTiOPO[sub 4] as a nonlinear crystal and obtained a pump threshold of 7 mW and an output power of 6 mW for a pump power of 40 mW. The OPO operated in a single longitudinal mode pair of a signal and an idler, over 1 h without mode hopping in the free-running condition. The signal and the idler wavelengths were tunable by 1 nm by changing the crystal temperature by 20 Celsius. The continuous tuning of the beat frequency between the signal and the idler was achieved by temperature tuning (slow control, 80 MHz/K) and E-field tuning (fast control, 0.75 MHz/V). We demonstrated the feasibility of frequency control by phase locking the beat frequency. The beat frequency could be successfully phase locked to a signal generated by a synthesizer through the electrooptic effect of the crystal. The phase locking could be maintained over I h.
- Subjects
PARAMETRONS; FREQUENCIES of oscillating systems
- Publication
Applied Physics B: Lasers & Optics, 1998, Vol 66, Issue 6, p719
- ISSN
0946-2171
- Publication type
Article
- DOI
10.1007/s003400050458