Method and apparatus for optoacoustic spectroscopy

Patent · 01 January 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
• 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

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