Efficient operation of a diode-pumped Yb:NaY(WO(4))(2) laser.
An efficient diode-pumped Yb:NaY(WO(4))(2) (Yb:NYW) disordered crystal laser has been experimentally demonstrated for the fist time. The Yb:NYW crystal has a peak absorption cross section of 1.09 x 10(-20) cm(2) at 972 nm and emission cross section of 1.24 x 10(-20) cm(2) at 1010 nm. Under an absorbed pump power of 11.7 W, the Yb:NYW laser generated an average output power as high as 4.1 W, with a slope efficiency of 45%. It was found that the laser always operated in a self-pulsing mode, and the laser spectrum showed random jumps with time. The mechanism of self-pulsing in the laser was also investigated.
School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore. gqxie@ntu.edu.sg
G Q
GQ
Xie
D Y
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Tang
H J
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Zhang
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Wang
L J
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Qian
D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D008029:Lighting / Q000295:instrumentation* / Q000379:methods; D012666:Semiconductors; D015018:Ytterbium / Q000737:chemistry*
D015018:Ytterbium