Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1996-07-03
1998-05-05
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250343, 356328, 372 41, G01N 2135
Patent
active
057478074
ABSTRACT:
Contaminants are detected optically at concentrations below 1 part-per-million (ppm) and extending to a level approaching 1 part-per-trillion (ppt) by using intracavity laser spectroscopy (ILS) techniques. A diode laser-pumped solid-state laser (the ILS laser) is employed as a detector. The ILS laser comprises an ion-doped crystal medium contained in a laser cavity optically pumped by a diode laser pump laser. A gas sample containing gaseous contaminant species is placed inside the laser cavity and on one side of the ion-doped crystal. The output signal from the ILS laser is detected and analyzed to identify the gaseous species (via its spectral signature). The concentration of the gaseous species can be determined from the spectral signature as well. Advantageously, the diode laser pump laser is relatively small and compact in comparison to other sources of optical pumping. Additionally, the small/compact size of the diode laser pump laser makes the gas detection system constructed therewith amenable to a broad variety of practical applications.
REFERENCES:
patent: 4648714 (1987-03-01), Benner et al.
patent: 5432610 (1995-07-01), King et al.
patent: 5459745 (1995-10-01), Esterowtiz et al.
G. Atkinson et al, "Detection of Free Radicals by an Intracavity Dye Laser Technique," 59 Journal Of Chemical Physics, Jul. 1, 1973.
D. Gilmore et al, "Intracavity Absorption spectroscopy With a Titanium: Sapphire Laser," Optics Communications 77 (1990) 385-89;.
G. Atkinson, "Intracavity Laser Spectroscopy," SPIE Conf., Soc. Opt. Eng. 1637 (1992); pp. 126-133.
D. Gilmore et al, "Intracavity Laser Spectroscopy in the 1.38-1.55 .mu.m Spectral Region Using a Multimode Cr.sup.4+ : YAG Laser," Optics Communications 103 (1993) 370-74;.
A. Kachanov et al, "Intracavity laser spectroscopy with vibronic solid state lasers: I. Spectro-temporal transient behavior of a TI:Sapphire laser", Journal of the Optical Society of America B, 11 (1994) 2412-2421.
Atkinson George H.
Mehdizadeh Esmail
Fields Carolyn E.
Innovative Lasers Coropration
LandOfFree
Diode laser-pumped laser system for ultra-sensitive gas detectio does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Diode laser-pumped laser system for ultra-sensitive gas detectio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diode laser-pumped laser system for ultra-sensitive gas detectio will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-56995