| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Comparison of Small-Scale Actively and Passively Q-Switched Eye-Safe Intracavity Optical Parametric Oscillators at 1.57 µm |
| MIAO Jie-Guang**, PAN Yu-Zhai, QU Shi-Liang |
| Department of Optoelectronics Science, Harbin Institute of Technology (Weihai Campus), Weihai 264209 |
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| Cite this article: |
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MIAO Jie-Guang, PAN Yu-Zhai, QU Shi-Liang 2012 Chin. Phys. Lett. 29 074201 |
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Abstract The first experimental comparison between the actively and passively Q-switched intracavity optical parametric oscillators (IOPOs) at 1.57 µm driven by a small-scale diode-pumped Nd:YVO4 laser are thoroughly presented. It is found that the performances of the two types of IOPOs are complementary. The actively Q-switched IOPO features a shorter pulse duration, a higher peak power, and a superior power and pulse stability. However, in terms of compactness, operation threshold and conversion efficiency, passively Q-switched IOPOs are more attractive. It is further indicated that the passively Q-switched IOPO at 1.57 µm is a promising and cost-effective eye-safe laser source, especially at the low and moderate output levels. In addition, instructional improvement measures for the two types of IOPOs are also summarized.
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Received: 13 February 2012
Published: 29 July 2012
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