Shifting of infrared radiation using rotational raman resonances in diatomic molecular gases

Patent · Tue Jan 01 04:00:00 EST 1980

OSTI ID:863536

Kurnit, Norman A ^[1]

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1. Santa Fe, NM

A device for shifting the frequency of infrared radiation from a CO.sub.2 laser by stimulated Raman scattering in either H.sub.2 or D.sub.2. The device of the preferred embodiment comprises an H.sub.2 Raman laser having dichroic mirrors which are reflective for 16 .mu.m radiation and transmittive for 10 .mu.m, disposed at opposite ends of an interaction cell. The interaction cell contains a diatomic molecular gas, e.g., H.sub.2, D.sub.2, T.sub.2, HD, HT, DT and a capillary waveguide disposed within the cell. A liquid nitrogen jacket is provided around the capillary waveguide for the purpose of cooling. In another embodiment the input CO.sub.2 radiation is circularly polarized using a Fresnel rhomb .lambda./4 plate and applied to an interaction cell of much longer length for single pass 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 4194170
• OSTI ID: 863536
• Country of Publication: United States
• Language: English

Related Subjects

/372/307/
10
16
applied
capillary
capillary wave
capillary waveguide
cell
cell contain
cell contains
circularly
circularly polarize
circularly polarized
comprises
contains
cooling
device
diatomic
diatomic molecular
dichroic
dichroic mirror
disposed
dt
embodiment
embodiment comprises
frequency
fresnel
gas
gases
hd
infrared
infrared radiation
input
interaction
jacket
lambda
laser
length
liquid
liquid nitrogen
mirrors
molecular
molecular gas
molecular gases
nitrogen
operation
opposite
pass
pass operation
plate
polarized
preferred
preferred embodiment
provided
purpose
radiation
raman
raman laser
raman scattering
reflective
resonances
rhomb
rotational
scattering
shifting
single
single pass
stimulated
stimulated raman
transmittive
waveguide