Accession Number : ADA181643

Title :   Utah Biomedical-Physical Sciences Applications of Free Electron Lasers.

Descriptive Note : Annual rept. May 86-Apr 87,

Corporate Author : UTAH UNIV MEDICAL CENTER SALT LAKE CITY LASER INST

Personal Author(s) : Dixon,John A. ; Straight,Richard C. ; Taylor,P. C.

Report Date : 07 MAY 1987

Pagination or Media Count : 241

Abstract : Work is presented on the operation, beam characteristics, and biomedical-materials research and sapphire fiber development with the Stanford Mark III free Electron Laser. The MK III FEL has been operated in the wavelength range of 2 micrometers to 4 micrometers at up to 4 mJ per pulse (1-2 microsec). Irradiances as high as 800 GW/cm2 have been obtained with pulse durations as low as 350 femto seconds. Preliminary studies with sapphire fibers are underway in the 2-4 micrometer range. Preliminary studies with biological samples including gallstones, kidney stones and egg shells and in vivo soft tissue samples including albino mouse ear skin and vasculature and with semiconductor materials have been carried over a biologically important water absorption peak (approximately 2.94 micrometers) has been demonstrated.

Descriptors :   *FREE ELECTRON LASERS, *SEMICONDUCTORS, *BIOMEDICINE, ALBINISM, EAR, MICE, EGGS, IRRADIATION, FIBERS, SAPPHIRE, MATERIALS, ABSORPTION, WATER, BIOLOGY, SAMPLING, BILIARY SYSTEM, CALCULI, PULSE RATE, BLOOD VESSELS, CONFIGURATIONS, FREQUENCY, CRYSTAL GROWTH, MEDICAL RESEARCH, KIDNEY DISEASES, SURGERY, SOFT TISSUES, RADIATION EFFECTS, LASER SAFETY, PLASMA DIAGNOSTICS

Subject Categories : Lasers and Masers
      Medicine and Medical Research
      Medical Facilities, Equipment and Supplies
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE