Accession Number : ADA318478
Title : Development of Compact 1.06 and 2.1 Micron Lasers.
Descriptive Note : Final rept. 30 Sep 93-31 Mar 96,
Corporate Author : HOWARD UNIV WASHINGTON DC
Personal Author(s) : Kushawaha, Vikram S.
PDF Url : ADA318478
Report Date : 31 MAR 1996
Pagination or Media Count : 3
Abstract : During the project period, extensive studies of the laser performance of a Nd: and Ho:Tm ions doped in YAG (Y 3Al5O12), KGW (KGd (WO4)2) host crystals pumped by diode lasers operating in continuous wave or pulsed modes of operation. The diode lasers were temperature tuned to select the appropriate wavelengths to pump the Nd-ions at 785 nm. The laser action from these ions was observed at 1.06 and 2.1 micron, respectively. These laser actions were observed by using various pumping schemes such as end-pumping or side-pumping in different configurations such as fixed rod, rotating disks, and moving slabs. These configurations were used only in case of Nd:YAG or Nd:KGW laser crystals. For Tm:Ho:LuAG, only the rod configuration was used at low temperature to observe the laser action at 2.1 micron. A slightly improved laser performance as observed using the rotating disk or moving slab configurations as compared to the fixed configurations. The Nd:YAG and Nd:KGW laser experiments were also performed at very low temperature (approx. 78 K). The laser performance from Nd:KGW at the low temperature was found to be slightly better than the Nd:YAG laser. These results have either been published or submitted for publication in refereed Journals.
Descriptors : *YTTRIUM ALUMINUM GARNET, *YAG LASERS, *LASERS, FREQUENCY, IONS, LOW TEMPERATURE, PERFORMANCE(ENGINEERING), CONTINUOUS WAVES, CRYSTALS, PULSES, CONFIGURATIONS, RODS, DISKS, NEODYMIUM, GADOLINIUM, ROTATION, PUMPING, HOLMIUM, THULIUM, LUTETIUM, DIODE LASERS.
Subject Categories : Lasers and Masers
Distribution Statement : APPROVED FOR PUBLIC RELEASE