標題: High-power structured laser modes: direct generation of a vortex array
作者: Chen, Y. F.
Ke, H. T.
Tseng, Y. C.
Hsieh, M. X.
Tung, J. C.
Hsieh, Y. H.
Liang, H. C.
Huang, K. F.
電子物理學系
Department of Electrophysics
公開日期: 15-七月-2020
摘要: The frequency degeneracy induced by the astigmatism in a nearly hemispherical cavity is originally exploited to generate vortex array laser modes with the output power up to 300 mW. The inhomogeneous Helmholtz equation is employed to derive the wave function for manifesting the characteristics of the lasing modes. The theoretical wave function explicitly reveals the role of the Gouy phase in the formation of vortex arrays. Numerical analyses are further performed to confirm that the thermal lensing effect in the laser crystal assists the lasing transverse order to increase with increasing pump power. It is believed that the high efficiency enables the present laser modes to be useful in the applications of structured vortex beams. (C) 2020 Optical Society of America
URI: http://dx.doi.org/10.1364/OL.399251
http://hdl.handle.net/11536/155204
ISSN: 0146-9592
DOI: 10.1364/OL.399251
期刊: OPTICS LETTERS
Volume: 45
Issue: 14
起始頁: 4096
結束頁: 4099
顯示於類別:期刊論文