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:
Oct. 10, 2000
Filed:
Mar. 05, 1999
John F Black, San Mateo, CA (US);
George Frangineas, Fremont, CA (US);
Hartmuth Hecht, Moss Beach, CA (US);
Coherent, Inc., Santa Clara, CA (US);
Abstract
In an intracavity frequency-converted pulsed laser, output-pulses having a duration longer than three milliseconds are simulated by a burst of temporally spaced-apart pulses having a shorter duration, the burst duration being about equal to the duration of the pulse being simulated. In an example of the laser including a KTP crystal providing frequency-doubling and having an Nd:YAG gain-medium for providing fundamental radiation at a wavelength of 1064 nm, a thin-etalon having a thickness of about 75 micrometers is included in the laser cavity to suppress generation of laser-radiation at wavelengths of 1061 and 1074 nm. Suppression of oscillation at these wavelengths prevents damage in the KTP crystal due to abrupt intracavity power surges thereby preventing damage to the KTP crystal. Examples of intracavity-pumped optical parametric oscillators including a thin etalon and operated in a similar manner are also disclosed.