Method and apparatus for measuring photoluminescence in crystal

Details Method and apparatus for measuring photoluminescence in crystal Method and apparatus for measuring photoluminescence in crystal

1993-03-25

1995-01-10

Dzierzynski, Paul M.

Radiant energy

Luminophor irradiation

2504591, G01N 2164

Patent

active

053810163

ABSTRACT:
Provided are a method and an apparatus for measuring photoluminescence, which can measure the inside of crystal such as silicon. A lifetime of fluorescence-generating carrier may be evaluated in a mathematical technique without using an expensive pulse laser source. Also, an incident beam wavelength dependency and a polarization dependency of fluorescence may be evaluated by a simple method. A laser having a wavelength which can go into a crystal is projected into an object crystal, fluorescence in generated light inside the crystal is separated through a filter having a frequency band for transmission of fluorescence. An intensity and a spread of fluorescence are obtained as a function of depth from a surface of the crystal to evaluate the lifetime of luminescent center in a mathematical manner. The projection light wavelength dependency of fluorescence may be evaluated by rotating a narrow-band filter, and a polarization dependency by suitably inserting a polarizing filter into an optical patch.

REFERENCES:
patent: 4169228 (1979-09-01), Briska et al.
Japanese journal of Applied Physics, vol. 22, No. 4, Apr. 1983, pp. L207-L209, Moriya et al, "Observation of Lattice Defencts in GaAs and Heat-treated Si Crystals in Infrared Light Scattering Tomography".
Applied Physics A: Solids and Surfaces A50 (1990) Jun., No. 6, Berlin, DE, Steigmeier et al, "Light Scattering Tomography and Photoluminescence Topography".

Affiliated with

Also associated with

Rating

Method and apparatus for measuring photoluminescence in crystal 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 and apparatus for measuring photoluminescence in crystal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for measuring photoluminescence in crystal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-852868