J. Yang, B. Lee, J. W. Kim, B. Jeong, E. G. Sall', S. A. Chizhov, D. Heo, V. E. Yashin, G. H. Kim, “Femtosecond laser system based on thin rod Yb : YAG active elements with an output power of 110 W”, Kvantovaya Elektronika, 2019, Volume 49, Number 12,Pages <nobr>1168

This article is cited in 10 papers

Lasers

Femtosecond laser system based on thin rod Yb : YAG active elements with an output power of 110 W

J. Yang^a, B. Lee^a, J. W. Kim^a, B. Jeong^a, E. G. Sall'^a, S. A. Chizhov^a, D. Heo^a, V. E. Yashin^b, G. H. Kim^a

^a Electro-Medical Device Research Center, Korea Electrotechnology Research Institute, Republic of Korea
^b All-Russian Research Center "S. I. Vavilov State Optical Institute", St. Petersburg

Abstract: A three-stage laser amplification system based on thin Yb : YAG rods with diode laser pumping is developed and fabricated. In this system, the average power of a continuous train of femtosecond pulses from a Yb : KGW master oscillator with a pulse repetition rate of 80 MHz and initial pulse duration of 128 fs was raised by a factor of 100 to above 100 W. Preliminarily chirped laser pulses provided compensation of dispersion in optical elements of the system and obtaining 580-fs output pulses. The longer duration of output pulses relates to spectrum narrowing in the amplifiers.

Keywords: diode-pumped laser amplifier on Yb : YAG, high average radiation power, femtosecond pulses.

Received: 15.08.2019
Revised: 30.09.2019