Coherent addition of high power broad-area laser diodes with a compact VBG V-shaped external Talbot cavity

Liu, Bo; Braiman, Yehuda

doi:10.1016/j.optcom.2018.01.021

Title: Coherent addition of high power broad-area laser diodes with a compact VBG V-shaped external Talbot cavity

Journal Article · Tue Feb 06 00:00:00 EST 2018 · Optics Communications

DOI:https://doi.org/10.1016/j.optcom.2018.01.021· OSTI ID:1424490

Liu, Bo ^[1]; Braiman, Yehuda ^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Engineering Science Advanced Research. Computational Sciences and Engineering Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Mechanical, Aerospace, and Biomedical Engineering

In this paper, we introduced a compact V-shaped external Talbot cavity for phase locking of high power broad-area laser diodes. The length of compact cavity is ~25 mm. Near diffraction-limit coherent addition of 10 broad-area laser diodes indicated that high quality phase locking was achieved. We measured the near-field emission mode of each individual broad-area laser diode with different feedback, such as a volume Bragg grating and a high reflection mirror. Finally, we found out that the best result of phase locking broad-area laser diodes was achieved by the compact V-shaped external Talbot cavity with volume Bragg grating feedback.

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE; ORNL Laboratory Directed Research and Development (LDRD) Program; Office of Naval Research (ONR) (United States)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1424490

Alternate ID(s):: OSTI ID: 1548729

Journal Information:: Optics Communications, Vol. 414; ISSN 0030-4018

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 13 works

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Micro-integrated high-power narrow-linewidth external-cavity tapered diode laser at 808 nm Chi, Mingjun; Müller, André; Hansen, Anders K. Applied Optics, Vol. 59, Issue 2 https://doi.org/10.1364/ao.381439	journal	January 2020