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Grating stabilization design for high-power 980-nm semiconductor pump lasers

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7 Author(s)
Davis, M.K. ; Corning Lasertron, Bedford, MA, USA ; Ghislotti, G. ; Balsamo, S. ; Loeber, D.A.S.
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Wavelength stabilization of high-power pump lasers for fiber amplifier applications involves complex interactions between the laser chip and the fiber Bragg grating (FBG). We present a comprehensive theoretical model for the window of operation in the coherence collapse (CC) regime while maintaining wavelength locking in 980-nm FBG-stabilized pumps. Experimental data from the development of a 500-mW grating stabilized pump verifies the theory. We also provide the first evidence that the critical feedback distance for CC operation of longer laser diode chips is sensitive to detuning.

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:11 ,  Issue: 5 )