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. 25, 2006
Filed:
Mar. 01, 2004
Sergei V. Govorkov, Boca Raton, FL (US);
Luis A. Spinelli, Sunnyvale, CA (US);
William Eugene White, Santa Clara, CA (US);
Murray Keith Reed, Menlo Park, CA (US);
Sergei V. Govorkov, Boca Raton, FL (US);
Luis A. Spinelli, Sunnyvale, CA (US);
William Eugene White, Santa Clara, CA (US);
Murray Keith Reed, Menlo Park, CA (US);
Coherent, Inc., Santa Clara, CA (US);
Abstract
An optical pulse extender includes a delay loop formed by a plurality of mirrors and a graded reflectivity beamsplitter. The mirrors and the beamsplitter are configured and aligned such that a pulse to be broadened makes a predetermined number of round trips in the delay loop and is incident on a different zone of the beamsplitter after each round trip. The different zones of the beamsplitter have different reflection values and different transmission values. These values are selected such that the pulse extender delivers a plurality of temporally and spatially separated replica pulses each thereof having about the same energy. The delivered replica pulses together provide an extended pulse having a longer duration than the input pulse. The replica pulses may be passed through a beam homogenizer to spatially homogenize the temporal characteristics of the extended pulse.