Generation of partially coherent laser beam directly from spatial-temporal phase modulated optical resonators |
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| Authors: | Qiang Lin Ligang Wang |
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| Affiliation: | Institute of Optics and State Key Laboratory of Modern Optical Instrumentation, Zhejiang University , Hangzhou, 310028, China E-mail: qlin@mail.hz.zj.cn |
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| Abstract: | Abstract The generation of a partially coherent laser beam directly from a spatial-temporal phase modulated optical resonator is investigated both experimentally and theoretically. The laser material used in the experiment is Nd:YAG rod pumped by Krypton lamps working in continuous wave mode. The phase modulation is fulfilled by an intra-cavity LiNbO3 electro-optic crystal driven by high voltage. The experimental results show that intracavity phase modulation is an effective way to generate partially coherent laser beams. The theoretical analysis and numerical simulation shows that the output beam can be characterized by Gaussian Schell-model (GSM) beams. The two-slit interference experiment confirms that the output beam is partially coherent. |
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