Method for the simultaneous determination of low optical bulk an

Details Method for the simultaneous determination of low optical bulk an Method for the simultaneous determination of low optical bulk an

1977-06-21

1978-05-30

Queisser, Richard C.

Measuring and testing

Vibration

Mechanical impedance

331 945R, 331DIG1, G01H 100

Patent

active

040916812

ABSTRACT:
A photoacoustic method of simultaneously determining optical bulk and surface absorption coefficients in solids in which a transducer is attached to the solid for measuring the amplitude of the acoustic wave generated by a beam of incident radiation as a function of distance of the transducer to the incident beam at a wavelength where bulk and surface losses, respectively, are heavily dominant. The transducer is chosen so as to give different functional dependencies for the bulk and surface absorption curves, respectively. The solid sample is also calibrated at wavelengths where bulk and surface absorption, respectively, are known. The output versus position or distance is measured at the wavelength of interest, and values of surface and bulk absorption coefficients are fitted to the respective pure curves so that they will add up to the experimentally generated composite curve. After the bulk and surface absorption curves have been determined for the wavelength of interest, the values of bulk and surface absorption coefficients can be determined by using the calibration constants found earlier.

REFERENCES:
patent: 3700890 (1972-10-01), Kruezer
patent: 3899921 (1975-08-01), Hockley
patent: 3938365 (1976-02-01), Dewey

Affiliated with

Also associated with

Rating

Method for the simultaneous determination of low optical bulk an does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for the simultaneous determination of low optical bulk an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the simultaneous determination of low optical bulk an will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-464100