| Original Articles |
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A 2.048μm Tm,Ho:GdVO4 Laser Pumped Doubly Resonant Optical Parametric Oscillator Based on Periodically Poled Lithium LiNbO3 |
| ZHANG Xing-Bao;YAO Bao-Quan;JU You-Lun;WANG Yue-Zhu |
| National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001 |
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| Cite this article: |
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ZHANG Xing-Bao, YAO Bao-Quan, JU You-Lun et al 2007 Chin. Phys. Lett. 24 1953-1954 |
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Abstract A multi-grating periodically poled LiNbO3 (PPLN) doubly resonant optical parametric oscillator (DROPO) pumped by a 2μm laser is demonstrated experimentally. Employing acousto-optically Q-switched Tm,Ho:GdVO4 laser with pump pulse of 25ns and repetition rate of 10kHz as pump sources firstly, the noncritically quasi-phase-matched (QPM) tunable mid-IR output in 3.87--4.43μm is produced. Wavelength tuning is achieved with crystal temperature tuning from 50--180°C. When the incident average pump power is 3W at
2.048μm, the total OPO output power of 195mW at wavelength 3.88μm is obtained, corresponding to optical-to-optical conversion efficiency up to 6.5%.
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| Keywords:
42.65.Yj
42.70.Mp
42.60.Fc
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Received: 09 March 2007
Published: 25 June 2007
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| PACS: |
42.65.Yj
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(Optical parametric oscillators and amplifiers)
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42.70.Mp
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(Nonlinear optical crystals)
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42.60.Fc
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(Modulation, tuning, and mode locking)
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