Title :
An EMQ-switched CO2 laser as a pump source for a far-infrared laser with a high peak power and a high repetition rate
Author :
Bae, Jongsuck ; Nozokido, Tatuo ; Shirai, Hirokazu ; Furuya, Kazuyuki ; Nishida, Takashi ; Mizuno, Koji
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
fDate :
7/1/1989 12:00:00 AM
Abstract :
A modified current pulsed Q (EMQ)-switched CO2 laser which is Q-switched by a mechanical beam chopper in combination with a pulsed discharge current is discussed. The laser produces a very stable output with a peak power greater than 1 kW at a repetition rate of 1000 p.p.s. for all transitions in the P and R branches of the CO2 spectrum. A CH3F laser pumped by the EMQ-switched laser produces 496 μm radiation in a 6.5 W peak, 100 ns pulses at 500 p.p.s. in the lowest loss EH11 mode
Keywords :
Q-switching; carbon compounds; gas lasers; optical pumping; organic compounds; 1 kW; 496 micron; 6.5 W; CO2 laser; CO2 spectrum; EH11 mode; EMQ-switched CO2 laser; far-infrared laser; fluoromethane laser; mechanical beam chopper; modified current pulsed CO2 laser; pulsed discharge current; pump source; repetition rate; Choppers; Finite impulse response filter; Laser beams; Laser excitation; Laser modes; Laser transitions; Optical pulses; Power lasers; Pump lasers; Waveguide lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
