| Original Articles |
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Passively Q-Switched Quasi-Continuous-Wave Diode-Pumped Intracavity Optical Parametric Oscillator at 1.57 |
| WANG Yu-Ye1,2, XU De-Gang1,2, WEN Wu-Qi1,2, WANG Peng1,2, YAO Jian-Quan 1,2 |
| 1Institute of Laser and Optoelectronics, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 3000722Key Laboratory of Optoelectric Information Science and Technology (Ministry of Education), Tianjin University, Tianjin 300072 |
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| Cite this article: |
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WANG Yu-Ye, XU De-Gang, WEN Wu-Qi et al 2008 Chin. Phys. Lett. 25 4009-4012 |
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Abstract We report on a passively Q-switched quasi-cw diode-pumped Nd:YAG including an intracavity optical parametric oscillator. The dynamics of this system is described by solving the coupled equations. The effect of the initial transmission of Cr4+:YAG saturable absorber on the signal wave operation is studied. Under optimum conditions, we achieve 2.3mJ energy at 1.57μm wavelength for 40Hz repetition rate. The peak power of the pulses amounts to 0.88MW with the pulse width of 2.6ns. When the Fresnel reflection losses of the filters are taken into account, the pulse energy would be higher than 2.3mJ. To the best of our knowledge, this is the highest pulse energy and peak power for such a type of single resonant quasi-cw diode pumped Nd:YAG/Cr4+:YAG IOPO laser.
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| Keywords:
42.65.Yj
42.55.Xi
42.60.Gd
02.60.Cb
42.70.Mp
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Received: 14 June 2008
Published: 25 October 2008
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| PACS: |
42.65.Yj
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(Optical parametric oscillators and amplifiers)
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42.55.Xi
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(Diode-pumped lasers)
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42.60.Gd
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(Q-switching)
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02.60.Cb
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(Numerical simulation; solution of equations)
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42.70.Mp
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(Nonlinear optical crystals)
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