Investigation on Intracavity SHG With Controllable Coherence in a Degenerate Laser
| Autor: | Yushuang Wang, Xuanxuan Ji, Osami Sasaki, Jixiong Pu, Chen Hongqin, Ziyang Chen |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
business.industry Speckle reduction Degenerate energy levels Physics::Optics Second-harmonic generation Degree of coherence Condensed Matter Physics Laser Atomic and Molecular Physics and Optics law.invention Transverse plane Optics law Optical cavity Physics::Atomic Physics Electrical and Electronic Engineering business Coherence (physics) |
| Zdroj: | IEEE Journal of Quantum Electronics. 56:1-6 |
| ISSN: | 1558-1713 0018-9197 |
| Popis: | We investigate intracavity second harmonic generation (SHG) in a degenerate laser for generating green laser with controllable degree of coherence. It is shown that spatial coherence of the SHG emission can be controlled by varying the diameter of the limiting aperture in the degenerate laser resonator. The pumping power also affects the number of the oscillating transverse modes, so that influences the spatial coherence of the output laser. The laser of low coherence for speckle reduction has been demonstrated. It is shown that the laser of low spatial coherence may find applications in imaging, and laser display etc. |
| Databáze: | OpenAIRE |
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