Device and method for noresonantly Raman shifting ultraviolet radiation

Patent · 31 December 1978

OSTI ID:863309

Loree, Thomas R ^[1]; Barker, Dean L ^[1]

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1. Los Alamos, NM

A device and method for nonresonantly Raman shifting broad band uv excimer laser radiation, which enhances preselected Stokes signals by varying the pressure of the Raman scattering medium, the focal interaction length of the incident radiation within the Raman scattering medium and its power density level. Gaseous molecular H.sub.2, D.sub.2, CH.sub.4 (methane), HD and mixes thereof, and liquid N.sub.2 are used as the Raman scattering medium to frequency shift the outputs of high power KrF and ArF lasers. A cable fed discharge with an unstable resonant cavity configuration is utilized to produce the output laser power levels required for operation.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4144464
• OSTI ID: 863309
• Country of Publication: United States
• Language: English

Related Subjects

/359/372/
arf
arf laser
band
broad
broad band
cable
cavity
cavity configuration
configuration
density
density level
device
discharge
enhances
excimer
excimer laser
fed
focal
frequency
frequency shift
gaseous
hd
incident
incident radiation
interaction
interaction length
krf
laser
laser power
laser radiation
lasers
length
level
levels
liquid
medium
methane
method
mixes
molecular
nonresonantly
noresonantly
operation
output
output laser
outputs
power
power density
power level
power levels
preselected
pressure
produce
radiation
raman
raman scattering
raman shifting
required
resonant
resonant cavity
scattering
scattering medium
shift
shifting
signals
stokes
stokes signal
ultraviolet
ultraviolet radiation
unstable
utilized
varying