The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 2006
Filed:
Feb. 11, 2004
Hamid R. Khazaei, Westford, MA (US);
Hongmin Chen, Acton, MA (US);
David Kirk Lewis, Maynard, MA (US);
Hsing Cheng, San Jose, CA (US);
Hamid R. Khazaei, Westford, MA (US);
Hongmin Chen, Acton, MA (US);
David Kirk Lewis, Maynard, MA (US);
Hsing Cheng, San Jose, CA (US);
Optovia Corporation, Action, MA (US);
Abstract
In a stabilized laser system, a an output signal is to be generated having a desired central wavelength. At least one laser, which, while emitting light and having a preselected portion thereof fed back thereto, causes the output signal of the laser to be shifted in wavelength in a first direction which is spaced apart from the center wavelength of the fed back signal. A feedback generating arrangement processes a first portion of the output signal from each laser and generates a feedback signal having a spectral response peaking at a wavelength shifted in an opposite direction to the first direction generated by each laser. The feedback signal each laser to provide an output signal at the output of the stabilized laser system having a spectral response that peaks essentially at the desired wavelength.