公开(公告)号：CA2381665A1

公开(公告)日：2001-02-15

申请号：CA2381665

申请日：2000-08-10

Applicant: CORETEK INC

Inventor： TAYEBATI PARVIZ ,  MCDANIEL DON ,  WATTERSON REICH ,  MCCALLION KEVIN

IPC: G01J9/02 ,  H01S5/0687 ,  H01S5/183 ,  H01S3/10

Abstract: A compact wavelength monitoring and control assembly (110) for a narrow band (i.e., laser) source is provided, comprising two narrow bandpass, wavelength selective transmission filter elements (130, 160) of Fabry-Perot structure through which two separate collimated beams from a laser source are directed onto two photodetectors (145, 175). A control circuit processes the simultaneously acquired signals from the two detectors (145, 175) as the las er wavelength is varied. The device functions as an optical wavelength discriminator in which the detectors (145, 175) convert optical energy to current (or voltage) for a feedback loop for controlling the laser source. A ny one of a large number of discrete, predetermined wavelengths may be chosen f or locking using the same device.

公开(公告)号：EP1218978A4

公开(公告)日：2006-06-14

申请号：EP00957375

申请日：2000-08-10

Applicant: CORETEK INC

Inventor： WATTERSON REICH ,  TAYEBATI PARVIZ ,  MCDANIEL DON ,  MCCALLION KEVIN

IPC: G01J9/02 ,  H01S5/0687 ,  H01S5/183 ,  H01S3/10

CPC classification number: G01J9/0246 ,  G01J2009/0257 ,  H01S5/0078 ,  H01S5/0687 ,  H01S5/18366 ,  H01S5/18388

Abstract: A compact wavelength monitoring and control assembly (110) for a narrow band (i.e., laser) source is provided, comprising two narrow bandpass, wavelength selective transmission filter elements (130, 160) of Fabry-Perot structure through which two separate collimated beams from a laser source are directed onto two photodetectors (145, 175). A control circuit processes the simultaneously acquired signals from the two detectors (145, 175) as the laser wavelength is varied. The device functions as an optical wavelength discriminator in which the detectors (145, 175) convert optical energy to current (or voltage) for a feedback loop for controlling the laser source. Any one of a large number of discrete, predetermined wavelengths may be chosen for locking using the same device.