| Original Articles |
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Nearly-Noncritical Phase Matching in MgO:LiNbO3 Optical Parametric Oscillator |
| YAO Jian-Quan1;YU Yi-Zhong1;WANG Peng1;WANG Tao1;ZHANG Bai-Gang1;DING Xin1;CHEN Ji1;H. J. Peng2;H. S. Kwok2 |
| 1Institute of Laser and Opto-electronics, Tianjin
University, Tianjin 300072
2Department of Electrical and Electronics Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong |
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| Cite this article: |
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YAO Jian-Quan, YU Yi-Zhong, WANG Peng et al 2001 Chin. Phys. Lett. 18 1214-1217 |
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Abstract We have proposed and demonstrated a nearly-noncritical
phase-matched (NCPM) optical parametric oscillation (OPO) in an MgO: LiNbO3 crystal with 5-mol% MgO by temperature tuning. By giving up perfect NCPM, the practical tuning range for the OPO is increased by two times. For the crystal, the operated temperature decreases with the phase-matching angle at degeneracy. With a cutting angle of 82°instead of the noncritical case of 90°, the tuning range was increased. In order to obtain sufficiently high output pulse energy for both signal and idler throughout the entire tuning range, five sets of mirrors were used for the resonator. The tuning range of the OPO was 800-1700 nm with temperatures tuning from 83°C to 224.2°C. The output energy was about 6.45 mJ with a conversion efficiency of nearly 13%. The bandwidth of the output was 1.0-1.1 nm.
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| Keywords:
42.65.Yj
42.65.Ky
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Published: 01 September 2001
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| PACS: |
42.65.Yj
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(Optical parametric oscillators and amplifiers)
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42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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