Method and apparatus for optoacoustic spectroscopy

Patent · Mon Jan 01 00:00:00 EST 1979

OSTI ID:863401

Amer, Nabil M ^[1]

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1. Berkeley, CA

A method and apparatus that significantly increases the sensitivity and flexibility of laser optoacoustic spectroscopy, with reduced size. With the method, it no longer is necessary to limit the use of laser optoacoustic spectroscopy to species whose absorption must match available laser radiation. Instead, "doping" with a relatively small amount of an optically absorbing gas yields optoacoustic signatures of nonabsorbing materials (gases, liquids, solids, and aerosols), thus significantly increasing the sensitivity and flexibility of optoacoustic spectroscopy. Several applications of this method are demonstated and/or suggested.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4163382
• OSTI ID: 863401
• Country of Publication: United States
• Language: English

Related Subjects

method
apparatus
optoacoustic
spectroscopy
significantly
increases
sensitivity
flexibility
laser
reduced
size
limit
species
absorption
match
available
radiation
doping
relatively
amount
optically
absorbing
gas
yields
signatures
nonabsorbing
materials
gases
liquids
solids
aerosols
increasing
applications
demonstated
suggested
significantly increases
absorbing material
laser radiation
reduced size
optoacoustic spectroscopy
match available
significantly increase
sorbing material
available laser
/73/250/