Improvement of the beam quality of a 1000-µm-wide broad-area diode laser with self-injection phase locking in an external cavity

Mingjun Chi; Birgitte Thestrup; Paul Michael Petersen

doi:10.1117/12.528313

1 June 2004 Improvement of the beam quality of a 1000-μm-wide broad-area diode laser with self-injection phase locking in an external cavity

Mingjun Chi, Birgitte Thestrup, Paul Michael Petersen

Author Affiliations +

Proceedings Volume 5336, High-Power Diode Laser Technology and Applications II; (2004) https://doi.org/10.1117/12.528313
Event: Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States

Abstract

In this paper, the experimental results of self-injection phase locking in a 10 W, single element wide broad-area diode laser are presented. The width of the emitting area of this diode is 1000 μm, to our knowledge it is the broadest single element diode laser that until now has been used in an external feedback cavity. The beam quality of the diode laser is improved by the asymmetric self-injection phase locking technique. The far-field and near-field profiles are measured with and without the self-injection phase locking at different operating currents. 3.65 W output power is obtained with the operating current of 13.0 A, with a beam quality factor M² of 16.6, which is improved with a factor of 14 by the self-injection phase locking technique.

Citation Download Citation

Mingjun Chi, Birgitte Thestrup, and Paul Michael Petersen "Improvement of the beam quality of a 1000-μm-wide broad-area diode laser with self-injection phase locking in an external cavity", Proc. SPIE 5336, High-Power Diode Laser Technology and Applications II, (1 June 2004); https://doi.org/10.1117/12.528313

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