Title :
Temperature control of laser action in scattering media
Author :
Kijoon Lee ; Lawandy, N.M.
Author_Institution :
Dept. of Phys., Brown Univ., Providence, RI, USA
Abstract :
Summary form only given. Our system is comprised of hydroxypropyl cellulose (HPC) with a nominal average molecular weight of 370,000 dissolved in deionized water. HPC is a FDA-approved, nonionic, water-soluble cellulose derivative possessing lower critical soluble temperature (LCST) in water. When a laser dye with high gain is dissolved into this system, it makes a nice random laser system where scattering length and photon diffusivity can be temperature-controlled. We used Kiton Red 620 as laser dye and pumped with 7 ns-long 532 nm laser pulse.
Keywords :
dye lasers; dyes; light scattering; optical pumping; solutions; thermo-optical effects; 532 nm; 7 ns; Kiton Red 620; cellulose derivative; critical soluble temperature; deionized water; high gain; hydroxypropyl cellulose; laser action; laser dye; macromolecule; nominal average molecular weight; photon diffusivity; random laser system; room temperature; scattering length; scattering media; temperature control; temperature-controlled; Dye lasers; Optical pumping; Optical scattering; Thermooptic effects;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2002. QELS '02. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
1-55752-708-3
DOI :
10.1109/QELS.2002.1031004
