High-power diffusion-bonded walk-off-compensated KTP OPO

Ruifen Wu; Kin Seng Lai; Hui Feng Wong; Ernest Lau; Yuan Liang Lim; Wenjie Xie

doi:10.1117/12.446600

29 October 2001 High-power diffusion-bonded walk-off-compensated KTP OPO

Ruifen Wu, Kin Seng Lai, Hui Feng Wong, Ernest Lau, Yuan Liang Lim, Wenjie Xie

Proceedings Volume 4595, Photonic Systems and Applications; (2001) https://doi.org/10.1117/12.446600
Event: International Symposium on Photonics and Applications, 2001, Singapore, Singapore

Abstract

Recently, we have obtained a 23.5 W of 2-micrometers intracavity OPO output which is, to the best of our knowledge, the highest power from an intracavity OPO reported in the literature. To achieve such high average power 2-micrometers OPO output in a simple and compact laser system, we have adopted the diffusion-bonded walk-off compensated (DBWOC) KTP OPO pumped by the anisotropy Nd:YALO laser. The walk-off compensated twin KTP crystals reduce the aperture effect due to Poynting's walkoff in the critically phase-matched parametric generation. At the same time, it increases the acceptance angle for the nonlinear interaction, resulting in more efficient OPO conversion. In addition, the diffusion-bonded configuration eliminates the optical losses at the in/out facets and the need for alignment of the crystals. In order to low down the OPO threshold and increase the effective gain of KTP OPO, we bonded two pairs of crystals together. In this paper, we will compare the recent results of the 2-micrometers KTP OPO results with different pairs of DBWOC KTP OPO. With two pairs of DBWOC KTP device, we observed 78% higher 2-micrometers average output power compared to one pair of KTP device.

Citation Download Citation

Ruifen Wu, Kin Seng Lai, Hui Feng Wong, Ernest Lau, Yuan Liang Lim, and Wenjie Xie "High-power diffusion-bonded walk-off-compensated KTP OPO", Proc. SPIE 4595, Photonic Systems and Applications, (29 October 2001); https://doi.org/10.1117/12.446600

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