Applied Physics B

, Volume 80, Issue 6, pp 635–638

Sapphire-conductive end-cooling of high power cryogenic Yb:YAG lasers

Authors

    • Institute of Laser EngineeringOsaka University
  • J. Kawanaka
    • Institute of Laser EngineeringOsaka University
  • M. Fujita
    • Central Research Laboratory
  • T. Kawashima
    • Central Research Laboratory
  • Y. Izawa
    • Institute of Laser EngineeringOsaka University
Rapid Communication

DOI: 10.1007/s00340-005-1779-4

Cite this article as:
Tokita, S., Kawanaka, J., Fujita, M. et al. Appl. Phys. B (2005) 80: 635. doi:10.1007/s00340-005-1779-4

Abstract

We have demonstrated a high-power laser oscillator with end-cooling using a sapphire-sandwiched Yb:YAG disk at near liquid nitrogen temperature. An output power of 75 W with a near-diffraction-limited beam was obtained from a 0.6-mm thick activemedium. The slope efficiency and themaximum optical–optical efficiency were 80 and 70%, respectively, with respect to absorbed pump power.

PACS

42.55.Rz42.55.Xi

Copyright information

© Springer-Verlag 2005