Improved beam profile of a 266 nm deep ultraviolet laser employing a multi-mirror-reflected cavity

A 266 nm deep ultraviolet (DUV) laser with a good Gaussian profile is reported employing a multi-mirror-reflected cavity. A type-I LiB3O5 (LBO) crystal is used to double the fundamental-light (1064 nm) wavelength generated by an actively Q-switched Nd:YVO4 laser with an intra-cavity configuration. A...

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Bibliographic Details
Published in:Laser physics letters 2016-04, Vol.13 (4), p.45002
Main Authors: Yang, Houwen, Cheng, Wenyong, Wang, Junhua, Zhang, Yaguang, Wang, Xiaoqian, Zhang, Lijie
Format: Article
Language:English
Subjects:
deep ultraviolet laser
diode-pumped
harmonic generation
multi-mirror-reflected cavity
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Summary:A 266 nm deep ultraviolet (DUV) laser with a good Gaussian profile is reported employing a multi-mirror-reflected cavity. A type-I LiB3O5 (LBO) crystal is used to double the fundamental-light (1064 nm) wavelength generated by an actively Q-switched Nd:YVO4 laser with an intra-cavity configuration. A fourth harmonic generation (FHG) wavelength is obtained by a type-I β-BaB2O4 (BBO) crystal. The output power as high as 440 mW at 266 nm is generated under an incident power of 2.26 W at 532 nm, corresponding to the conversion efficiency of 532 nm-266 nm up to 19.5% with a repetition rate of 15 kHz and the pulse duration of 266 nm is 10.7 ns.
ISSN:1612-2011
1612-202X
DOI:10.1088/1612-2011/13/4/045002