公开(公告)号：US09905990B1

公开(公告)日：2018-02-27

申请号：US14689964

申请日：2015-04-17

Applicant: Alakai Defense Systems, Inc.

Inventor： Ken Pohl ,  Matthew King ,  Adam J. Hopkins ,  Alan Ford

IPC: H01S3/106 ,  G01N21/65 ,  H01S3/08 ,  H01S3/1055 ,  H01S3/107

CPC classification number: H01S3/1062 ,  G01J3/44 ,  G01N21/65 ,  H01S3/025 ,  H01S3/08054 ,  H01S3/0809 ,  H01S3/0823 ,  H01S3/105 ,  H01S3/1055 ,  H01S3/1068 ,  H01S3/107

Abstract: A system, apparatus, and method for multiple wavelength Raman interrogation laser generation and Raman spectra acquisition. An intracavity laser tuning subsystem is integrated into the laser cavity. The tuning subsystem allows switching between at least two laser output frequencies in a manner effective for good identification and separation of Raman spectra from non-Raman spectra, including auto-fluorescence from the sample and background. The tuning subsystem can be implemented in different ways in the cavity. It does not require material alteration of the line-narrowing components. Also, processing of acquired raw signal from the multiple wavelength interrogation can further assist effective Raman spectra identification and separation.