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

Patent · Tue Mar 18 00:00:00 EST 1980

OSTI ID:7002296

Kurnit, N A

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. 3 figs.

• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): US 4194170; A
• Application Number: PPN: US 5-960409
• OSTI ID: 7002296
• Resource Relation: Patent File Date: 13 Nov 1978
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CARBON DIOXIDE LASERS
FREQUENCY CONVERTERS
LASER RADIATION
DESIGN
INFRARED RADIATION
FREQUENCY MODULATION
DEUTERIUM
DEUTERIUM TRITIDE
HYDROGEN
HYDROGEN DEUTERIDE
HYDROGEN TRITIDE
OPERATION
POLARIZATION
RAMAN EFFECT
SCATTERING
TRITIUM
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
DEUTERIDES
DEUTERIUM COMPOUNDS
ELECTROMAGNETIC RADIATION
ELEMENTS
GAS LASERS
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
ISOTOPES
LASERS
LIGHT NUCLEI
MODULATION
NONMETALS
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
RADIATIONS
RADIOISOTOPES
STABLE ISOTOPES
TRITIDES
TRITIUM COMPOUNDS
YEARS LIVING RADIOISOTOPES
426002* - Engineering- Lasers & Masers- (1990-)