Claims
- 1. A nonlinear spectrophotometer for fluorescent materials comprising:
- (a) a laser for producing a primary laser beam;
- (b) a second harmonic generation crystal that alters the primary laser beam;
- (c) a beam splitter for dividing the primary laser beam into a first signal manifold laser beam and a second signal manifold laser beam;
- (d) a first neutral density filter for filtering the first signal manifold laser beam to a first harmonic spectrum;
- (e) a means for passing filtered first signal manifold laser beam through a sample;
- (f) a first sensor for detecting filtered first signal manifold laser beam after passing through a sample;
- (g) a second neutral density filter for filtering the second signal manifold laser beam to a second harmonic spectrum;
- (h) a means for passing filtered second signal manifold laser beam through a sample;
- (i) a second sensor for detecting filtered second signal manifold laser beam after passing through a sample; and
- (j) a means to compare the outputs of the first and second sensors.
- 2. The nonlinear spectrophotometer of claim 1 in which the laser is a multi-stripe titanium-sapphire diode laser.
- 3. The nonlinear spectrophotometer of claim 1 in which the first and second sensors comprise a photomultiplier tube.
- 4. The nonlinear spectrophotometer of claim 1 in which the beam splitter is a dichroic beam splitter.
RIGHTS OF THE GOVERNMENT
The invention described herein may be manufactured and used by or for the Government of the United States for all governmental purposes without the payment of any royalty.