High repetition rate, wide-aperture KrF lasers for subpicosecond amplification

Author

Nodomi, Ryoichi ; Oeda, Yasuo ; Sajiki, Kazuaki ; Nakajima, Shin ; Watanabe, Manabu ; Watanabe, Shigetaka

Author_Institution

Komatsu Ltd., Kanagawa, Japan

Volume

27

Issue

3

fYear

1991

fDate

3/1/1991 12:00:00 AM

Firstpage

441

Lastpage

447

Abstract

A high repetition rate, wide-aperture KrF laser with a magnetic switch has been developed. A dynamic response and a core loss of several magnetic materials were measured, resulting in a loss as low as 0.45 J/pulse for a voltage risetime of ~100 ns. A maximum output energy of 2.5 J in 20 ns (FWHM) was obtained with a total efficiency of 2.5% at 20 Hz. The cross section of the output beam was 65×50 mm². Spectral, spatial, and temporal profiles of gain and absorption coefficients were also measured, resulting in a peak gain of 8.5%/cm. An output energy of 410 mJ was extracted in 280 fs with two beams by using this laser as an amplifier

Keywords

excimer lasers; high-speed optical techniques; krypton compounds; 2.5 J; 2.5 percent; 280 fs; 410 mJ; absorption coefficients; amplifier; core loss; cross section; dynamic response; full width half maximum; gain coefficient; high repetition rate; magnetic materials; magnetic switch; maximum output energy; output beam; spatial profiles; spectral profiles; subpicosecond amplification; temporal profiles; total efficiency; voltage risetime; wide aperture KrF excimer laser; Absorption; Core loss; Gain measurement; Laser beams; Loss measurement; Magnetic materials; Magnetic switching; Pulse measurements; Switches; Voltage;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.81344

Filename

81344