Optics: measuring and testing – By dispersed light spectroscopy
Patent
1999-09-21
2000-10-31
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
356312, G01J 302, G01N 2174
Patent
active
061410942
ABSTRACT:
Devices and techniques for performing highly-sensitive spectroscopic measurements in a sample vapor by using a four-wave-mixing optical system and an atomizer chamber. One embodiment of a spectrometer comprises a gas-phase atomizer having an atomizer chamber operable to vaporize a sample solution to produce a sample vapor, first and second alignment templates having apertures to align a probe beam, first and second pump beams to form a four-wave mixing configuration, a laser tunable to generate a laser beam at a desired wavelength corresponding to an absorption line in the sample vapor, and a set of optical elements disposed relative to the laser and the atomizer to split the laser beam into the probe beam, the first pump beam, and the second pump beam. The probe beam, the first and second pump beams are directed to overlap with one another in the sample vapor to produce a signal beam through a four-wave mixing process.
REFERENCES:
patent: 5600444 (1997-02-01), Tong
"Sensitivie Capillary-Based On-Column Detection Method By Laser Wave Mixing", Sandrine Berniolles, et al., Dept. of Chem., SDSU, SPIE vol. 2980, (1997) pp. 127-132,.
"Optical Fiber-Based Wave-Mixinig Probe", Jon Nunes, et al., Dept. of Chem., SDSU, SPIE vol. 2980, (1997) pp. 429-433.
"Circular Dichroism Spectroscopy Using Coherent Laser-Induced Thermal Gratings", David W. Neyer, et al., 1997 American Chemical Society, vol. 119, pp. 8293-8300.
"Optical Fiber-Based Wave Mixing as a Convenient and Sensitive Laser Analytical Tool for Condensed-Phase Analytes", Jon A. Nunes, et al., Dept. of Chem., SDSu, vol. 52, No. 5, 1998, pp. 763-769.
"Advanced Technologies for Environomental Monitoring and Remediation", Tuan Vo-Dinh, SPIE, vol. 2835, 1996, pp. 248-254.
"Circular Dichroism Spectroscopy by Four-Wave Mixing Using Polarization Grating-Induced Thermal Gratings", Jon A. Nunes, et al., Dpt. of Chem., SDSU, vol. 101, No. 18, The Journal of Physical Chemistra A, pp. 3279-3283.
"Sensitive absorbance detection method for capillary electrophoresis based on laser wave-mixing", Zhiquiang Wu, et al., Journal of Chromatography, (1997), pp. 291-298.
Evans F. L.
San Diego State University Foundation
LandOfFree
Sensitive laser spectroscopic detection based on three-dimension does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sensitive laser spectroscopic detection based on three-dimension, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sensitive laser spectroscopic detection based on three-dimension will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2058989