Lateral mode selection in a broad-area laser diode by self-injection locking with a mirror stripe

Birgitte Thestrup; Mingjun Chi; Paul Michael Petersen

doi:10.1117/12.529005

1 June 2004 Lateral mode selection in a broad-area laser diode by self-injection locking with a mirror stripe

Birgitte Thestrup, Mingjun Chi, Paul Michael Petersen

Proceedings Volume 5336, High-Power Diode Laser Technology and Applications II; (2004) https://doi.org/10.1117/12.529005
Event: Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States

Abstract

In this paper, we demonstrate lateral mode selection and amplification in a broad area laser (BAL) diode in an external cavity. The cavity is based on self-injection locking of an 807 nm, 3W broad area diode using a mirror stripe as the feedback unit. At the optimum mirror stripe position, the lateral far-field intensity profile is narrowed 8.5 times compared with the profile from the freely running laser when running at a drive current of twice the threshold current. We have determined the lateral angular range, in which, different array modes can be exited and, only, within a narrow range around 2.3° from the beam center a high, spatial beam coherence can be obtained.

Citation Download Citation

Birgitte Thestrup, Mingjun Chi, and Paul Michael Petersen "Lateral mode selection in a broad-area laser diode by self-injection locking with a mirror stripe", Proc. SPIE 5336, High-Power Diode Laser Technology and Applications II, (1 June 2004); https://doi.org/10.1117/12.529005

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