Non-intrusive beam power monitor for high power pulsed or continuous wave lasers

Patent · Fri Jan 01 00:00:00 EST 1993

OSTI ID:868651

Hawsey, Robert A ^[1]; Scudiere, Matthew B ^[1]

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1. Oak Ridge, TN

A system and method for monitoring the output of a laser is provided in which the output of a photodiode disposed in the cavity of the laser is used to provide a correlated indication of the laser power. The photodiode is disposed out of the laser beam to view the extraneous light generated in the laser cavity whose intensity has been found to be a direct correlation of the laser beam output power level. Further, the system provides means for monitoring the phase of the laser output beam relative to a modulated control signal through the photodiode monitor.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: AC05-84OR21400
• Assignee: United States of Americas as represented by United States (Washington, DC)
• Patent Number(s): US 5184189
• OSTI ID: 868651
• Country of Publication: United States
• Language: English

Related Subjects

non-intrusive
beam
power
monitor
pulsed
continuous
wave
lasers
method
monitoring
output
laser
provided
photodiode
disposed
cavity
provide
correlated
indication
view
extraneous
light
generated
intensity
found
direct
correlation
level
provides
means
phase
relative
modulated
control
signal
beam output
power pulsed
power pulse
beam relative
laser output
continuous wave
laser cavity
power level
control signal
output beam
laser beam
output power
beam power
light generated
laser power
wave laser
modulated control
direct correlation
provides means
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