Laser action by optically depumping lower states

Patent · Wed Nov 26 00:00:00 EST 1975

OSTI ID:7251444

Krupke, W F

A method and apparatus are described for obtaining laser action between an upper energy level and a lower energy level of a gaseous medium. The upper energy level is populated to some degree (short of achieving a conventional inverted population) by any suitable pumping means, and an inverted population is established by transiently and selectively depumping the lower energy level. The depumping may be done by exposing the medium to an intense source of radiation which selectively causes the transformation of the lower energy level species to some other energy level. Thus, a thermally pumped/optically depumped gas laser system is produced.

• Assignee: Energy Research and Development Administration
• OSTI ID: 7251444
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
GAS LASERS
DESIGN
CARBON DIOXIDE LASERS
ENERGY LEVELS
HEAT SOURCES
POPULATION INVERSION
PUMPING
RADIATION SOURCES
LASERS
420300* - Engineering- Lasers- (-1989)