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A simple technique to achieve active cavity-length stabilisation in a synchronously pumped optical parametric oscillator

S.D.Butterworth, S.Girard* and D.C.Hanna

Optoelectronics Research Centre, University of Southampton, U.K.
* Present address, Laboratoire de Spectroscopie Atomique, CNRS, 6 Boulevard Marechal Juin 14050 Caen, france.

Abstract

The dependence of oscillation wavelength on cavity length in a synchronously pumped optical parametric oscillator provides the basis of a scheme for stabilisation of the cavity length and wavelength. The design and performance of a simple implementation of this scheme via the use of a position-sensitive detector is reported for a lithium triborate optical parametric oscillator. The stabilisation scheme has proved effective over the entire tuning range of the oscillator (0.65 - 2.65μm), giving stability against fluctuations up to 200 Hz, with greatly improved amplitude stability, and allowing smooth wavelength tuning over a signal range of ~5nm.


Optics Communications (1996) Vol.123 pp.577-582

Southampton ePrint id: 78382

 

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Copyright University of Southampton 2006