Experimental investigations on transverse spatial profile of beam in an SBS generator

Huaping Gong; Yongxing Jin; Dianyang Lin

doi:10.1117/12.852691

2 December 2009 Experimental investigations on transverse spatial profile of beam in an SBS generator

Huaping Gong, Yongxing Jin, Dianyang Lin

Proceedings Volume 7631, Optoelectronic Materials and Devices IV; 76310X (2009) https://doi.org/10.1117/12.852691
Event: Asia Communications and Photonics, 2009, Shanghai, Shanghai , China

Abstract

Focusing Q-switched laser pulses into FC-72 medium, the transverse profiles and spatial evolution of beam in stimulated Brillouin scattering (SBS) are investigated experimentally by CCD camera and digital image processing technology, and the rules of spot size versus pump energy are obtained. The results show that the transverse profiles of backward SBS spots with different pump energies are Gaussian or quasi-Gaussian profiles when pump beam is Gaussian. And the spatial profiles of SBS spots change from quasi-Gaussian to Gaussian when the incident energy increases from the threshold to several times the threshold. At the same time, the size of SBS spot decreases with the increasing pump energy on the whole.

Citation Download Citation

Huaping Gong, Yongxing Jin, and Dianyang Lin "Experimental investigations on transverse spatial profile of beam in an SBS generator", Proc. SPIE 7631, Optoelectronic Materials and Devices IV, 76310X (2 December 2009); https://doi.org/10.1117/12.852691

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