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Laser characteristics of Cr:Nd:GdCOB self-frequency-doubling crystal

โœ Scribed by Xueyuan Hou; Yuming Sun; Yufei Li; Shihua Xu; Enquan Liu; Shujun Zhang; Zhenxiang Cheng; Huangchu Chen; Zongshu Shao

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
165 KB
Volume
32
Category
Article
ISSN
0030-3992

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โœฆ Synopsis

The phase matching angle of GdCOB crystal is calculated. By using Xenon ยฏash lamp as pump source, we have realized the free run from 1.06 mm to 0.53 mm in self-frequency-doubling Cr:Nd:GdCOB (bi-doped) crystal and Nd:GdCOB (uni-doped) crystal. The experimental results show that the threshold energies for bi-doped crystal and uni-doped crystal are 0.92 J and 1.00 J, respectively; when the pump energy is 10 J, the output energies of green laser for two kinds of crystals are 2.46 mJ and 1.96 mJ, respectively. The output energy of Cr:Nd:GdCOB crystal has an increase of 25% in comparison to that of Nd:Gd:COB crystal. In addition, we discuss ways to improve eciency.

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