Phase locking in a Nd:YVO4 waveguide laser array using Talbot cavity

Kenichi Hirosawa; Seiichi Kittaka; Yu Oishi; Fumihiko Kannari; Takayuki Yanagisawa

doi:10.1364/OE.21.024952

Phase locking in a Nd:YVO4 waveguide laser array using Talbot cavity

Kenichi Hirosawa, Seiichi Kittaka, Yu Oishi, Fumihiko Kannari, Takayuki Yanagisawa

Department of Electronics and Electrical Engineering

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

We demonstrated phase-locking in a laser-diode-array-pumped Nd:YVO4 laser array (15 emitters) using a Talbot cavity. The Nd:YVO4 slab crystal was coated by dielectric material for claddings and formed a planar waveguide for the vertical mode. To stabilize the horizontal array mode, periodical thermal lenses were generated by controlling the heat flow. The phase-locked waveguide array generated 1.65-W output power, while 2.02 W was available in a standard cavity. Two-peak supermode was demonstrated with the Talbot cavity and was converted to a single peak with a spatial light modulator. We also experimentally and numerically analyzed the characteristics of Talbot phase-locking.

Original language	English
Pages (from-to)	24952-24961
Number of pages	10
Journal	Optics Express
Volume	21
Issue number	21
DOIs	https://doi.org/10.1364/OE.21.024952
Publication status	Published - 2013 Oct 21

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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abstract = "We demonstrated phase-locking in a laser-diode-array-pumped Nd:YVO4 laser array (15 emitters) using a Talbot cavity. The Nd:YVO4 slab crystal was coated by dielectric material for claddings and formed a planar waveguide for the vertical mode. To stabilize the horizontal array mode, periodical thermal lenses were generated by controlling the heat flow. The phase-locked waveguide array generated 1.65-W output power, while 2.02 W was available in a standard cavity. Two-peak supermode was demonstrated with the Talbot cavity and was converted to a single peak with a spatial light modulator. We also experimentally and numerically analyzed the characteristics of Talbot phase-locking.",

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AU - Yanagisawa, Takayuki

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