Open AccessA high-peak-power UV picosecond-pulse light source based on a gain-switched 155 μm laser diode and its application to time-resolved spectroscopy of blue-violet materials
Author(s) -
Aya Sato,
S. Kono,
Kodai Saito,
Kimitoshi Sato,
Hiroyuki Yokoyama
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.002522
Subject(s) - materials science , picosecond , optics , optoelectronics , laser , spectroscopy , pulse duration , diode , energy conversion efficiency , ultraviolet , laser diode , physics , quantum mechanics
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.