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Proceedings Paper

Improvement of the beam quality of a 1000-µm-wide broad-area diode laser with self-injection phase locking in an external cavity
Author(s): Mingjun Chi; Birgitte Thestrup; Paul Michael Petersen
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Paper 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.

Paper Details

Date Published: 1 June 2004
PDF: 5 pages
Proc. SPIE 5336, High-Power Diode Laser Technology and Applications II, (1 June 2004); doi: 10.1117/12.528313
Show Author Affiliations
Mingjun Chi, Riso National Lab. (Denmark)
Birgitte Thestrup, Riso National Lab. (Denmark)
Paul Michael Petersen, Riso National Lab. (Denmark)

Published in SPIE Proceedings Vol. 5336:
High-Power Diode Laser Technology and Applications II
Mark S. Zediker, Editor(s)

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