Laser pulse detector

Patent · Thu Jan 01 00:00:00 EST 1981

OSTI ID:863826

Mashburn, Douglas N ^[1]; Akerman, M Alfred ^[1]

---

1. Knoxville, TN

A laser pulse detector is provided which is small and inexpensive and has the capability of detecting laser light of any wavelength with fast response (less than 5 nanoseconds rise time). The laser beam is focused onto the receiving end of a graphite rod coaxially mounted within a close-fitting conductive, open-end cylindrical housing so that ablation and electric field breakdown of the resulting plasma occurs due to a bias potential applied between the graphite rod and housing. The pulse produced by the breakdown is transmitted through a matched impedance coaxial cable to a recording device. The cable is connected with its central lead to the graphite rod and its outer conductor to the housing.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: W-7405-ENG-26
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4254332
• OSTI ID: 863826
• Country of Publication: United States
• Language: English

Related Subjects

laser
pulse
detector
provided
inexpensive
capability
detecting
light
wavelength
fast
response
nanoseconds
rise
time
beam
focused
receiving
graphite
rod
coaxially
mounted
close-fitting
conductive
open-end
cylindrical
housing
ablation
electric
field
breakdown
resulting
plasma
occurs
due
bias
potential
applied
produced
transmitted
matched
impedance
coaxial
cable
recording
device
connected
central
lead
outer
conductor
bias potential
occurs due
coaxially mounted
potential applied
pulse detector
cylindrical housing
outer conductor
laser pulse
electric field
laser beam
laser light
coaxial cable
fast response
rise time
resulting plasma
/250/