Off-line-locked laser diode species monitor system
An off-line-locked laser diode species monitor system includes: reference means for including at least one known species having a first absorption wavelength; a laser source for irradiating the reference means and at least one sample species having a second absorption wavelength differing from the first absorption wavelength by a predetermined amount; means for locking the wavelength of the laser source to the first wavelength of the at least one known species in the reference means; a controller for defeating the means for locking and for displacing the laser source wavelength from said first absorption wavelength by said predetermined amount to the second absorption wavelength; and a sample detector device for determining laser radiation absorption at the second wavelength transmitted through the sample to detect the presence of the at least one sample species.
- Research Organization:
- Spectral Sciences Inc., Burlington, MA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG02-94ER81865
- Assignee:
- Spectral Sciences, Inc. (Burlington, MA)
- Patent Number(s):
- 5,459,574
- Application Number:
- 08/324,101
- OSTI ID:
- 1531414
- Resource Relation:
- Patent File Date: 1994-10-14
- Country of Publication:
- United States
- Language:
- English
System for measuring the concentration of a gaseous component by detecting positions of mode jumps in a laser diode
|
patent | April 1993 |
Gaseous species absorption monitor
|
patent | June 1991 |
Concentration detector
|
patent | September 1991 |
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