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A high-peak-power UV picosecond-pulse light source based on a gain-switched 1.55 microm laser diode and its
Aya Sato1, Shunsuke Kono, Kyosuke Saito
1New Industry Creation Hatchery Center, Tohoku University, 6-6-10 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8579, Japan.
Abstract:
We generated sub-kilowatt peak-power and 6-ps duration 390-nm optical pulses via the fourth harmonic generation of amplified optical output from a gain-switched 1.55-microm laser diode. We obtained a power-conversion-efficiency of 12% from 1.55-microm to 390-nm light, and subsequently applied the ultraviolet pulses to time-resolved spectroscopy of blue-violet luminescent materials, including a Coumarine dye solution and nitride semiconductor materials using single-photon and two-photon excitation schemes.
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