A tunable picosecond dye laser for use in dioxin analysis.
A distributed-feedback dye laser with a quenching cavity was designed and constructed for generating a tunable picosecond pulse with a narrow spectral linewidth. This nearly transform-limited pulse was succeedingly amplified by a triple-pass off-axis amplifier. The pulse duration and the spectral linewidth were 60 ps and 9.4 pm, respectively. The amplified pulse was frequency-doubled by second-harmonic generation, producing a 0.5-mJ pulse with no background emission. The potential advantage of this laser in the analysis of dioxin based on supersonic jet/resonance-enhanced multiphoton ionization/mass spectrometry is discussed.
Takeyasu
Nobuyuki
N
Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, Fukuoka, Japan.
Deguchi
Takayuki
T
Tsutsumikawa
Manami
M
Matsumoto
Junichi
J
Imasaka
Totaro
T