Stokes injected Raman capillary waveguide amplifier

Patent · Tue Jan 01 00:00:00 EST 1980

OSTI ID:863651

Kurnit, Norman A ^[1]

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1. Santa Fe, NM

A device for producing stimulated Raman scattering of CO.sub.2 laser radiation by rotational states in a diatomic molecular gas utilizing a Stokes injection signal. The system utilizes a cryogenically cooled waveguide for extending focal interaction length. The waveguide, in conjunction with the Stokes injection signal, reduces required power density of the CO.sub.2 radiation below the breakdown threshold for the diatomic molecular gas. A Fresnel rhomb is employed to circularly polarize the Stokes injection signal and CO.sub.2 laser radiation in opposite circular directions. The device can be employed either as a regenerative oscillator utilizing optical cavity mirrors or as a single pass amplifier. Additionally, a plurality of Raman gain cells can be staged to increase output power magnitude. Also, in the regenerative oscillator embodiment, the Raman gain cell cavity length and CO.sub.2 cavity length can be matched to provide synchronism between mode locked CO.sub.2 pulses and pulses produced within the Raman gain cell.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4222011
• OSTI ID: 863651
• Country of Publication: United States
• Language: English

Related Subjects

stokes
injected
raman
capillary
waveguide
amplifier
device
producing
stimulated
scattering
laser
radiation
rotational
diatomic
molecular
gas
utilizing
injection
signal
utilizes
cryogenically
cooled
extending
focal
interaction
length
conjunction
reduces
required
power
density
below
breakdown
threshold
fresnel
rhomb
employed
circularly
polarize
opposite
circular
directions
regenerative
oscillator
optical
cavity
mirrors
single
pass
additionally
plurality
cells
staged
increase
output
magnitude
embodiment
cell
matched
provide
synchronism
mode
locked
pulses
produced
pulses produced
raman capillary
stimulated raman
cryogenically cooled
molecular gas
cell cavity
waveguide amplifier
raman scattering
optical cavity
laser radiation
power density
output power
capillary waveguide
cavity length
single pass
stokes injected
injection signal
diatomic molecular
cavity mirror
utilizing optical
injected raman
interaction length
circularly polarize
pass amplifier
capillary wave
/330/359/