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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 12, Iss. 11 — Nov. 1, 1995
  • pp: 2087–2094

Diode-laser-pumped continuous-wave KTP optical parametric oscillator

M. Scheidt, B. Beier, R. Knappe, K.-J. Boller, and R. Wallenstein  »View Author Affiliations


JOSA B, Vol. 12, Issue 11, pp. 2087-2094 (1995)
http://dx.doi.org/10.1364/JOSAB.12.002087


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Abstract

We report on a diode-laser-pumped, noncritically phase-matched, continuous-wave optical parametric oscillator (OPO) based on KTP. The OPO, which consists of a 12-mm-long, x-cut KTP crystal and a linear two-mirror cavity, was pumped by the 769-nm output of a single-stripe GaAlAs diode laser. With a triply (pump-, signal-, and idler-) resonant cavity the pump power at threshold was as low as 6 mW. At a pump power of 74 mW the power of the generated single-mode 1.1-μm signal wave exceeded 20 mW. The measured spectral width was less than 70 MHz. With a doubly (pump- and signal-) resonant cavity the OPO’s threshold of less than 50 mW was also within the power range of the single-stripe diode laser. With a pump power of 69 mW the signal power was 7.5 mW. Low-threshold operation has also been demonstrated by use of an injection-locked, 200-μm-wide, 20-stripe GaAlAs diode-laser array as the pump source. These experimental results show the feasibility and the promising aspects of using high-brightness diode lasers as pump sources for efficient, compact, continuous-wave near-infrared OPO systems.

© 1995 Optical Society of America

Citation
M. Scheidt, B. Beier, R. Knappe, K.-J. Boller, and R. Wallenstein, "Diode-laser-pumped continuous-wave KTP optical parametric oscillator," J. Opt. Soc. Am. B 12, 2087-2094 (1995)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-12-11-2087

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