Title:
【発明の名称】キャビティ内レーザの出力強度を測定することによる汚染種の同定及び濃度決定
Document Type and Number:
Japanese Patent JP2002526766
Kind Code:
A
Abstract:
A method and apparatus for detecting the presence of a specific concentration of gaseous species within a calibrated range in a gas sample are disclosed. The ILS gas detection system of the present invention simply comprises an ILS laser and an optical detector. However, the potential or operational wavelength bandwidth of the ILS laser is preferably entirely included within one of the absorption bands or regions assigned to the intracavity gaseous species being monitored. Thus, within the calibrated range, the presence of the gaseous species changes the output laser intensity of the ILS laser. Consequently, only the intensity of the output of the ILS laser need be monitored in order to quantitatively determine the concentration of the absorbing gaseous species when using the ILS method of the present invention.
Inventors:
Atkinson, George H
Pilgrim, Jeffrey S
Pilgrim, Jeffrey S
Application Number:
JP2000574912A
Publication Date:
August 20, 2002
Filing Date:
September 30, 1999
Export Citation:
Assignee:
Innovative Lasers Corporation
International Classes:
G01J3/14; G01J3/18; G01J3/26; G01J3/32; G01J3/42; G01J3/45; G01N21/01; G01N21/35; G01N21/39; H01S3/00; G01J3/10; (IPC1-7): G01N21/35; G01J3/10; G01J3/14; G01J3/18; G01J3/26; G01J3/32; G01J3/42; G01J3/45; G01N21/01; H01S3/00
Attorney, Agent or Firm:
Seiji Yanagida (1 person outside)