High brightness, sub-nanosecond, and compact passively Q-switched laser with intracavity volume Bragg gratings

Evan R. Hale; Ivan Divliansky; Leonid Glebov

doi:10.1117/12.2307204

4 May 2018 High brightness, sub-nanosecond, and compact passively Q-switched laser with intracavity volume Bragg gratings

Evan R. Hale, Ivan Divliansky, Leonid Glebov

Author Affiliations +

Proceedings Volume 10637, Laser Technology for Defense and Security XIV; 1063711 (2018) https://doi.org/10.1117/12.2307204
Event: SPIE Defense + Security, 2018, Orlando, FL, United States

Abstract

A high brightness, high energy passively Q-switched (PQS) Nd:YAG laser is presented using volume transmitting Bragg gratings (TBGs) as angular filters. A planar cavity with a length of 1 cm, an 800 μm diameter pump beam, a 20% transmission Cr:YAG saturable absorber, and a 40% output coupling resulted in output pulse energies greater than 1 mJ and durations near 600 ps. In order to increase brightness without altering cavity length, a TBG with narrow angular selectivity placed in the cavity to suppress the higher order transverse modes allowing for near diffraction limited output.

Conference Presentation

Citation Download Citation

Evan R. Hale, Ivan Divliansky, and Leonid Glebov "High brightness, sub-nanosecond, and compact passively Q-switched laser with intracavity volume Bragg gratings", Proc. SPIE 10637, Laser Technology for Defense and Security XIV, 1063711 (4 May 2018); https://doi.org/10.1117/12.2307204

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