Studies of two-photon pumped frequency-upconverted lasing properties of a new dye material

Journal Article · Sat Mar 01 04:00:00 EST 1997 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.364303· OSTI ID:467218

He, G S; Yuan, L; Cui, Y; Li, M; Prasad, P N ^[1]

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1. Photonics Research Laboratory, Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260-3000 (United States)

The two-photon absorption (TPA), TPA-induced frequency upconversion emission, and two-photon-pumped (TPP) lasing properties of a new dye, {ital trans}-4[{ital p}-(N-hydroxyethylN-methylamino)stryryl]-N-methylpyridinium iodide (abbreviated as ASPI) were experimentally investigated. This new dye has a moderate TPA cross section ({sigma}{sub 2}{approx}3.9{times}20{sup {minus}20} cm{sup 4}/GW in benzyl alcohol), but exhibits a low lasing threshold and high lasing efficiency when pumped with a 1064 nm pulsed laser beam. Furthermore, the TPA-induced fluorescence yield is strongly dependent on the polarity of the solvent, making it a promising dye for sensing applications. The spectral, temporal, and spatial structures as well as the output/input characteristics of the TPP cavity lasing and the superradiant (cavityless) lasing are systematically measured using a 1 cm path quartz cuvette filled with the ASPI solution or a doped polymer rod. The net conversion efficiency from the absorbed 1064 nm pump pulse energy to the {approximately}615 nm upconverted cavity lasing energy was found to be as high as {approximately}17{percent}. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 467218
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 6 Vol. 81; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ABSORPTION SPECTRA
CROSS SECTIONS
DYE LASERS
DYES
FLUORESCENCE
LASER MATERIALS
MULTI-PHOTON PROCESSES
OPTICAL PUMPING
ORGANIC COMPOUNDS
SUPERRADIANCE
VISIBLE SPECTRA
optical frequency conversion