Linda X Chen

Author:

Linda Chen

ISBN #:

0325008809

Author:

Linda Chen

ISBN #:

0531000176

Author:

Linda Chen

ISBN #:

0849357373

Author:

Linda Chen

ISBN #:

0849357381

US Patent:

51519097, Sep 29, 1992

Filed:

Apr 22, 1991

Appl. No.:

7/689356

Inventors:

Scott A. Davenport - Montara CA
Mark V. Ortiz - San Jose CA
Linda Chen - Fremont CA
Dirk J. Kuizenga - Sunnyvale CA

Assignee:

Laserscope - San Jose CA

International Classification:

H01S 310

US Classification:

372 22

Abstract:

A laser system using non-linear crystals for second harmonic generation and solid state gain media is operated under data processor control so that a plurality of pump power modes are available. The data processor modulates the pump power in a low power mode, and supplies continuous pump power in combination with Q-switching in a high power mode. Alternatively, modulation may be used in both low power and high power modes, with the parameters of the modulation adjusted under program control. Second harmonic generation without a Q-switch in high power modes can be achieved as well. The data processing control of pump power allows optimization of pump energy consumption and the generation of waste heat so that the laser resonator may be air-cooled in many environments. Also other design objectives can be achieved for specific laser applications using the program controlled data processor to drive the pump power source.

US Patent:

20140225796, Aug 14, 2014

Filed:

Feb 8, 2013

Appl. No.:

13/762402

Inventors:

Chien-An Chen - Foster City CA, US
Linda Chen - Foster City CA, US

International Classification:

H01Q 15/00

US Classification:

343781CA

Abstract:

An ultra-wide bandwidth multi-channel offset Cassegrain dichroic antenna system serves for bidirectional signal transmission between a ground-based system and at least one satellite. By properly selecting the high and low frequency band, ultra wide bandwidths for both high and low frequency band signals are provided. The band widths are about 15%, even up-to 50%, of the carrier frequency. Especially, the band widths for high frequency band signals are much wider than that for low frequency band signals. The low frequency band can be from 10.7 up-to 12.75 GHz while the high frequency band can be from 17 up-to 30 GHz. Furthermore, in order to achieve ultra-wide bandwidth, a surface of a dichroic sub-dish is divided into a plurality of unit areas. Arrangements of the metal dichroic element of one unit area are slightly different from another unit area f, while the metal elements on same unit area are identical.