Blue upconversion thulium laser

Conference · Mon Jan 01 04:00:00 EST 1990

DOI:https://doi.org/10.1117/12.18393· OSTI ID:7006169

Nguyen, D C; Faulkner, G E; Weber, M E; Dulick, M

Upconversion has been an active area of research for at least two decades, mainly because of its wide ranging applications from infrared quantum counters, visible-emitting phosphors, to upconversion lasers. The upconversion lasers have recently become attractive with the advent of semiconductor laser diodes as the pump source. In an upconversion laser, the laser active ion is excited by internal upconversion of near-ir or red light via multiphoton excitation or cooperative processes and emits anti-Stokes visible light. Since the laser diode output wavelength can be composition turned to match the upconversion laser ion absorption lines, a substantial fraction of the ions can be driven into higher energy levels, thus enhancing the upconversion process. These upconversion solid-state lasers offer a potentially simple and compact source of visible coherent light with semiconductor laser diode excitation. We recently reported a novel upconversion thulium laser that emits blue light at 77 K. In this paper additional data on this 77 K upconversion laser as well as preliminary results on the room temperature upconversion laser are presented. In these demonstrations, dye lasers were used instead of diode lasers because they were more readily available than high power semiconductor laser diodes and their wavelengths could be adjusted easily. 14 refs., 5 figs., 1 tab.

• Research Organization: Los Alamos National Lab., NM (USA)
• Sponsoring Organization: DOE/MA
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 7006169
• Report Number(s): LA-UR-90-161; CONF-900162--2; ON: DE90006517
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
ALKALI METALS
CRYSTALS
DAMAGING NEUTRON FLUENCE
DATA
DATA PROCESSING
DEMONSTRATION PROGRAMS
DESIGN
DOPED MATERIALS
DYE LASERS
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
EXPERIMENTAL DATA
FLUORESCENCE
FLUORINE
FREQUENCY ANALYSIS
FUNCTION GENERATORS
HALOGENS
INFORMATION
LASERS
LIQUID LASERS
LITHIUM
LUMINESCENCE
MATERIALS
MEASURING METHODS
METALS
NEUTRON FLUENCE
NONMETALS
NUMERICAL DATA
OPTICAL PUMPING
PERFORMANCE TESTING
PLANNING
POLARIZATION
POWER GENERATION
PROCESSING
PULSE GENERATORS
PUMPING
RESEARCH PROGRAMS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS
TECHNOLOGY ASSESSMENT
TEMPERATURE EFFECTS
TESTING
TRANSITION ELEMENTS
YTTRIUM