Title :
Properties of two-photon pumped cavity lasing in novel dye doped solid matrices
Author :
He, Guang S. ; Bhawalkar, Jayant D. ; Zhao, Chanfeng ; Prasad, Paras N.
Author_Institution :
Dept. of Chem., State Univ. of New York, Buffalo, NY, USA
fDate :
5/1/1996 12:00:00 AM
Abstract :
Two-photon pumped frequency upconversion cavity lasing at ~600 nm is accomplished in three types of dye-doped solid rods pumped with ~10 ns and 1.06-μm IR laser pulses. The dopant is a new dye, trans-4-[p-(N-ethyl-N-(hydroxyethyl)amino)styryl]-N-methylpyridinium tetraphenylborate, abbreviated as ASPT, which possesses a greater two-photon absorption cross section and stronger upconversion fluorescence emission than common commercial dyes (such as rhodamine). Three different materials were chosen as solid matrices: poly(2-hydroxyethyl methacrylate), VYCOR porous glass, and sol-gel glass. Using a Q-switched Nd:YAG pulse laser as the pump source, strong cavity lasing could be achieved in these three ASPT doped solid rods as well as in ASPT solution in a liquid cell. The spectral, temporal, and spatial characteristics of the cavity lasing output have been systematically investigated. The measured output-input characteristics, lasing lifetime, and damage threshold for the three different rods are presented
Keywords :
dye lasers; fluorescence; laser beams; laser cavity resonators; optical frequency conversion; optical pumping; organic compounds; photoluminescence; solid lasers; two-photon processes; 1.06 mum; 10 ns; 600 nm; ASPT solution; Q-switched Nd:YAG pulse laser; VYCOR porous glass; YAG:Nd; YAl5O12:Nd; cavity lasing output; commercial dyes; damage threshold; dye doped solid matrices; dye-doped solid rods; lasing lifetime; liquid cell; output-input characteristics; poly(2-hydroxyethyl methacrylate); rhodamine; sol-gel glass.; spatial characteristics; spectral characteristics; temporal characteristics; trans-4-[p-(N-ethyl-N-(hydroxyethyl)amino)styryl]-N-methylpyridini um tetraphenylborate; two-photon absorption cross section; two-photon pumped cavity lasing; upconversion cavity lasing; upconversion fluorescence emission; Fluorescence; Frequency conversion; Glass; Laser excitation; Optical frequency conversion; Optical pulses; Optical waveguides; Pump lasers; Solid lasers; Transmission line matrix methods;
Journal_Title :
Quantum Electronics, IEEE Journal of