Development of a Short Pulse Broadband and Narrow Linewidth Ultraviolet Laser Using Ce:LiCAF Crystal

Authors

  • Pham Van Duong Institute of Physics, Vietnam Academy of Science and Technology
  • Nguyen Xuan Tu Institute of Physics, Vietnam Academy of Science and Technology
  • Nguyen Van Diep Institute of Physics, Vietnam Academy of Science and Technology
  • Minh Hong Pham Institute of Physics, Vietnam Academy of Science and Technology
  • Nobuhiko Sarukura Institute of Laser Engineering, Osaka University, Suita Osaka 565-0871, Japan
  • Marilou Cadatal-Raduban Centre for Theoretical Chemistry and Physics, School of Natural and Computational Sciences, Massey University, Albany, Auckland 0632, New Zealand

DOI:

https://doi.org/10.15625/0868-3166/29/3SI/14335

Keywords:

ultraviolet laser, short pulse laser, tunable laser, narrow linewidth laser, resonator transient, rare earth-doped fluoride

Abstract

We report the successful development of an all-solid state laser based on a Czochralski method-grown cerium-doped lithium calcium aluminum fluoride (Ce3+:LiCaAlF6 or Ce:LiCAF) crystal as the gain medium. Results for the broadband, narrow linewidth and short pulse laser emission are obtained by pumping the crystal with 7 ns pulses from the fourth harmonics (266 nm) of a Nd:YAG laser operating at 10 Hz. The effects of output coupler reflectivity, resonator length and pump energy on the laser pulse duration were explored. With broadband configuration, a maximum output pulse energy of 3.4 mJ and a slope efficiency of about 33% were achieved. By optimizing the parameters of the resonator and pump laser energy, 450 ps UV laser pulses were generated from resonator transient conditions of low-Q and short resonator under a near threshold pump energy. With narrow linewidth configuration, where the end mirror is replaced by a grating, tunability from 281 nm to 299 nm is also achieved with a linewidth of about 0.2 nm.

Downloads

Download data is not yet available.

Downloads

Published

22-10-2019

How to Cite

Duong, P. V., Tu, N. X., Diep, N. V., Pham, M. H., Sarukura, N., & Cadatal-Raduban, M. (2019). Development of a Short Pulse Broadband and Narrow Linewidth Ultraviolet Laser Using Ce:LiCAF Crystal. Communications in Physics, 29(3SI), 341. https://doi.org/10.15625/0868-3166/29/3SI/14335

Issue

Section

Papers

Most read articles by the same author(s)