Radiant energy – Invisible radiant energy responsive electric signalling – Ultraviolet light responsive means
Reexamination Certificate
2006-01-03
2006-01-03
Hannaher, Constantine (Department: 2878)
Radiant energy
Invisible radiant energy responsive electric signalling
Ultraviolet light responsive means
Reexamination Certificate
active
06982426
ABSTRACT:
A nitric oxide sensor and method is disclosed. The sensor is based on sum-frequency mixing of a tunable, 395-nm external cavity diode laser with a 532-nm diode-pumped intracavity-frequency-doubled Nd:YAG laser in a beta-barium-borate crystal. The output from the BBO crystal is ultraviolet radiation at 227 nm and is split using a 50—50 beam splitter. Half of the radiation is directed into a reference photomultiplier tube, and the other half of the UV radiation is directed through the medium of interest and then directed into a signal photomultiplier tube. The output from the photomultiplier tubes is compared and the difference utilized to indicate the level of nitric oxide by absorption-based spectrosocpic techniques.
REFERENCES:
patent: 6635415 (2003-10-01), Bollinger et al.
U.S. Provisional Appl. No. 60/493,564, filed Aug. 7, 2003, entitled Diode-Laser-Based Ultraviolet Absorption Sensor for Nitric Oxide.
“Diode Laser Based Sum Frequency Generation of Tunable Wavelength Modulated UV Light for OH Radical Detection”, by Daniel B. Oh, Optics Letters, vol. 20, No. 1, Jan. 1, 1995.
“Development of A Narrow-Band, Tunable, Frequency-Quadrupled Diode Laser for UV Absorption Spectroscopy”, by Koplow et al, Applied Optics, vol. 37, No. 18, Jun. 20, 1998.
“High-Sensitivity Detection of CH Radicals in Flames by Use of a Diode-Laser-Based Near-Ultraviolet Light Source”, by Peterson et al., Optics Letters, vol. 24, No. 10, May 15, 1999.
“Sum-Frequency Generation With a Blue Diode Laser for Mercury Spectroscopy at 254 nm”, by Alnis et al., Applied Physics Letters, vol. 76, No. 10, Mar. 6, 2000.
“OH Detection by Absorption of Frequency-Doubled Diode Laser Radiation at 308 nm”, by Barry et al., Chemical Physics Letters 319, Mar. 19, 2000.
“OH Sensor Based on Ultraviolet, Continuous-Wave Absorption Spectroscopy Utilizing a Frequency-Quadrupled, Fiber-Amplified External-Cavity Diode Laser” by Ray et al., Optics Letters, vol. 26, No. 23, Dec. 1, 2001.
“Sum Frequency Generation at 309 nm Using a Violet and a Near-IR DFB Diode Laser for Detection of OH”, by Corner et al., Applied Physics B Lasers and Optics 74, Mar. 14, 2002.
Anderson Thomas N.
Barron-Jimenez Rodolfo
Brown Michael S.
Caton Jerald A.
Gord James R.
AFMCLO/JAZ
Hannaher Constantine
Lambert Richard A.
Taningco Marcus
The United States of America as represented by the Secretary of
LandOfFree
Nitric oxide sensor and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Nitric oxide sensor and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nitric oxide sensor and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3584218