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:
Mar. 15, 2016
Filed:
Jul. 25, 2014
Tohoku University, Sendai-shi, Miyagi, JP;
Hiroyuki Yokoyama, Sendai, JP;
TOHOKU UNIVERSITY, Sendai-shi, JP;
Abstract
Provided is a semiconductor laser device which can generate an ultra-short pulse light. A semiconductor laser device disclosed herein includes a semiconductor laser unit that performs a gain-switching operation using a relaxation oscillation mechanism to generate a first pulse and a following component of the first pulse, and a filter that processes an output from the semiconductor laser unit by removing a signal in a wavelength bandwidth generated due to at least the following portion in a wavelength bandwidth broadened by chirping. The filter is configured as a short pass filter which passes a short-wavelength component. Further, an apparatus using non-linear optical effect which uses the semiconductor laser device is also provided.