Method and apparatus for producing laser radiation following two-photon excitation of a gaseous medium
Patent
·
OSTI ID:863293
- Menlo Park, CA
- Livermore, CA
- Hamden, CT
- Palo Alto, CA
- Fort Lewis, WA
Method and apparatus for producing laser radiation by two-photon optical pumping of an atomic or molecular gaseous medium and subsequent lasing action. A population inversion is created as a result of two-photon absorption of the gaseous species. Stark tuning is utilized, if necessary, in order to tune the two-photon transition into exact resonance. In particular, gaseous ammonia (NH.sub.3) or methyl fluoride (CH.sub.3 F) is optically pumped by a pair of CO.sub.2 lasers to create a population inversion resulting from simultaneous two-photon excitation of a high-lying vibrational state, and laser radiation is produced by stimulated emission of coherent radiation from the inverted level.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- 4,140,978
- OSTI ID:
- 863293
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
method
apparatus
producing
laser
radiation
following
two-photon
excitation
gaseous
medium
optical
pumping
atomic
molecular
subsequent
lasing
action
population
inversion
created
result
absorption
species
stark
tuning
utilized
tune
transition
exact
resonance
particular
ammonia
nh
methyl
fluoride
optically
pumped
pair
lasers
create
resulting
simultaneous
high-lying
vibrational
produced
stimulated
emission
coherent
inverted
level
two-photon excitation
lasing action
photon absorption
optical pump
simultaneous two-photon
coherent radiation
molecular gas
optical pumping
laser radiation
gaseous medium
stimulated emission
population inversion
optically pumped
gaseous ammonia
producing laser
optically pump
/372/
method
apparatus
producing
laser
radiation
following
two-photon
excitation
gaseous
medium
optical
pumping
atomic
molecular
subsequent
lasing
action
population
inversion
created
result
absorption
species
stark
tuning
utilized
tune
transition
exact
resonance
particular
ammonia
nh
methyl
fluoride
optically
pumped
pair
lasers
create
resulting
simultaneous
high-lying
vibrational
produced
stimulated
emission
coherent
inverted
level
two-photon excitation
lasing action
photon absorption
optical pump
simultaneous two-photon
coherent radiation
molecular gas
optical pumping
laser radiation
gaseous medium
stimulated emission
population inversion
optically pumped
gaseous ammonia
producing laser
optically pump
/372/