公开(公告)号：US20180266946A1

公开(公告)日：2018-09-20

申请号：US15981298

申请日：2018-05-16

Applicant: Block Engineering, LLC

Inventor： Petros A. Kotidis ,  Erik Deutsch ,  Hongke Ye ,  Alexander Mazurenko ,  Anish K. Goyal ,  Jeffrey S. Socha

IPC: G01N21/39 ,  G01J3/433 ,  H01S5/062 ,  G01J3/10 ,  H01S5/34 ,  G01N21/3504 ,  G01N21/17 ,  G01N21/03 ,  H01S5/40

CPC classification number: G01N21/39 ,  G01J3/108 ,  G01J3/433 ,  G01N21/031 ,  G01N21/3504 ,  G01N2021/1704 ,  G01N2021/3513 ,  G01N2021/399 ,  G01N2201/0612 ,  H01S5/0622 ,  H01S5/3401 ,  H01S5/4012 ,  H01S5/4025 ,  H01S5/4087

Abstract: A system and method are disclosed for gas sensing over a wide tunable wavelength range provided by one or more quantum cascade lasers. A laser beam is generated within the wide tunable wavelength range, which is given by the sum of the wavelength ranges from the individual lasers. Gas sensing or detection is achieved by obtaining an infrared absorption spectrum for a sample contained in one or more cells having different path lengths for the laser beam.