Published October 2009 | Version v1
Journal article Metadata-only

Passively Q-switched Nd:YAG ceramic microchip laser with azimuthally polarized output

Creators

  • 1. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China)
  • 2. Institute for Laser Science, University of Electro-Communications, Tokyo 182-8585 (Japan)

Description

A passively-Q-switched neodymium-doped yttrium aluminum garnet (Nd:YAG) ceramic microchip laser was demonstrated to emit azimuthally polarized beam bus using a chromium-doped YAG (Cr4+:YAG) crystal as saturable absorber and a multilayer concentric subwavelength grating as polarization-selective output coupler. The laser's output power reached 512 mW with an initial slope efficiency of nearly 60%, and the pulse had 1.15-kW peak power with 40-ns duration and 11-kHz repetition rate at 3.9-W absorbed pump power. The laser beam's polarization degree was 97.6%. The thermal lensing effect in Nd:YAG microchip remained as a problem to be solved

Availability note (English)

Available from http://dx.doi.org/10.1002/lapl.200910068

Additional details

Identifiers

DOI
10.1002/lapl.200910068;

Publishing Information

Journal Title
Laser physics letters (Internet)
Journal Volume
6
Journal Issue
10
Journal Page Range
p. 711-714
ISSN
1612-202X

INIS

Country of Publication
Russian Federation
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
46009263
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
ALUMINATES; CERAMICS; CHROMIUM; CHROMIUM IONS; CRYSTALS; DOPED MATERIALS; KHZ RANGE; NEODYMIUM COMPOUNDS; NEODYMIUM LASERS; OPTICS; PHOTON EMISSION; POLARIZATION; POLARIZED BEAMS; Q-SWITCHING; YTTRIUM COMPOUNDS
Descriptors DEC
ALUMINIUM COMPOUNDS; BEAMS; CHARGED PARTICLES; ELEMENTS; EMISSION; FREQUENCY RANGE; IONS; LASERS; MATERIALS; METALS; OXYGEN COMPOUNDS; RARE EARTH COMPOUNDS; SOLID STATE LASERS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS