Simple optical parametric oscillator-amplifier in unitary crystal, tunable over the visible range of spectrum and its application for two-photon spectroscopy

Sergei M. Klimentov; Serge V. Garnov; Alexander S. Epifanov; Alexander A. Manenkov

doi:10.1117/12.177159

2 June 1994 Simple optical parametric oscillator-amplifier in unitary crystal, tunable over the visible range of spectrum and its application for two-photon spectroscopy

Sergei M. Klimentov, Serge V. Garnov, Alexander S. Epifanov, Alexander A. Manenkov

Author Affiliations +

Proceedings Volume 2145, Nonlinear Optics for High-Speed Electronics and Optical Frequency Conversion; (1994) https://doi.org/10.1117/12.177159
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

For application of optical parametric oscillator (OPO) to investigation of nonlinear interaction of laser radiation with matter the factor of importance is stability of light spatial distribution and spotsize position on a target through a tuning range. Collinear temperature tunable schemes show an advantage for these purposes, in particular, for small pump beam diameters. A simple and efficient visible range parametric converter can be realized using two-pass configuration, where parametric luminescence is excited on the first pass through a nonlinear crystal and amplified on the second pass after spatial filtering. Lack of resonator simplifies high power UV pumping and getting of relatively narrow emission spectrum. Using such an approach, we have made the oscillator-amplifier system temperature tunable in the range of 440 to 670 nm employing 4-cm-length ADP crystal pumped by 266 nm radiation from the single-mode YAG:Nd laser. The output energy of 3 mJ in about 1-ns pulsewidth has been achieved with total conversion efficiency of 10%. A spatial profile of the output beam kept its shape within the branch of the tuning curve. This allowed us to use the device as a proper tool for investigation of two-photon excitation in undoped CsI and KI single crystals. The OPO signal output was used to record photoconductivity spectra in these materials.

Citation Download Citation

Sergei M. Klimentov, Serge V. Garnov, Alexander S. Epifanov, and Alexander A. Manenkov "Simple optical parametric oscillator-amplifier in unitary crystal, tunable over the visible range of spectrum and its application for two-photon spectroscopy", Proc. SPIE 2145, Nonlinear Optics for High-Speed Electronics and Optical Frequency Conversion, (2 June 1994); https://doi.org/10.1117/12.177159

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