Mode Stabilization Of A Laterally Structured Broad Area Diode Laser Using An External Volume Bragg Grating

Abstract

An external volume Bragg grating (VBG) is used for transverse and longitudinal mode stabilization of a broad area diode laser (BAL) with an on-chip transverse Bragg resonance (TBR) grating. The internal TBR grating defines a transverse low-loss mode at a specific propagation angle inside the BAL. Selection of the TBR mode was realized via the angular geometry of an external resonator assembly consisting of the TBR BAL and a feedback element. A feedback mirror provides near diffraction limited and spectral narrow output in the TBR mode albeit requiring an intricate alignment procedure. If feedback is provided via a VBG, adjustment proves to be far less critical and higher output powers were achieved. Moreover, additional modulation in the far field distribution became discernible allowing for a better study of the TBR concept.

Publication Date

5-4-2015

Publication Title

Optics Express

Volume

23

Issue

9

Number of Pages

12394-12400

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/OE.23.012394

Socpus ID

84943372032 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84943372032

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