✦ LIBER ✦

A CW green laser emission by self-sum-frequency-mixing in Nd:GdCOB crystal

✍ Scribed by Y. Shao; H.J. Jin; J. Lin; D. Zhang; Z.H. Tao; T.Y. Zhang; Y.L. Li; Q.R. Ruan

Publisher: John Wiley and Sons
Year: 2011
Tongue: English
Weight: 91 KB
Volume: 8
Category: Article
ISSN: 1612-2011
DOI: 10.1002/lapl.201110058

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✦ Synopsis

A compact and efficient green laser light at 538 nm produced by self-sum-frequency-mixing of both fundamental infrared laser waves (1061 and 1091 nm) in Nd:GdCa 4 O(BO 3 ) 3 (Nd:GdCOB) crystal is demonstrated. With 18.2 W of diode pump power, a maximum output power of 1.73 W in the green spectral range at 538 nm has been achieved, corresponding to an optical-to-optical conversion efficiency of 9.5%; the output power stability over 30 min is better than 3%. To the best of our knowledge, this is first work on self-sumfrequency-mixing of a diode pumped Nd:GdCOB laser. Intensity, a.u. 60 50 40 30 20 10 0 4 3 2 1 0 -4 -3 -2 -1 Beam radius, mm Measured Gaussian fit

Far-field beam spatial profile of the 538 nm laser. Inset -the beam shape of green laser

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