30 April 1993 High-performance tunable optical parametric oscillator
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Proceedings Volume 1837, Frequency-Stabilized Lasers and Their Applications; (1993); doi: 10.1117/12.143695
Event: Applications in Optical Science and Engineering, 1992, Boston, MA, United States
Abstract
We report the experimental demonstration of tunable optical frequency division based on an efficient, one-step parametric downconversion process in a potassium titanyl phosphate (KTP) optical parametric oscillator (OPO). Our compact OPO generated two nearly degenerate subharmonic outputs that can be tuned over a 1.5 THz range in the signal-idler beat frequency by crystal angle tuning and cavity length scanning. We achieved continuous tuning of the beat frequency over a range of 0.5 GHz through the use of temperature and electro-optic tuning of the KTP crystal. A tunable optical frequency divider was realized by phase locking the signal- idler beat frequency to an external microwave frequency source, which yielded a beatnote linewidth at the sub-Hz level. The output frequencies of the phase-locked OPO were therefore precisely controlled by the tunable microwave source and the pump frequency. Characteristics of three different OPO cavity designs and their operations are discussed.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dicky Lee, Ngai C. Wong, "High-performance tunable optical parametric oscillator", Proc. SPIE 1837, Frequency-Stabilized Lasers and Their Applications, (30 April 1993); doi: 10.1117/12.143695; https://doi.org/10.1117/12.143695
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KEYWORDS
Optical parametric oscillators

Crystals

Ferroelectric materials

Microwave radiation

Nonlinear crystals

Mode locking

Signal detection

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