Practical method and device for enhancing pulse contrast ratio for lasers and electron accelerators

Zhang, Shukui; Wilson, Guy

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Title: Practical method and device for enhancing pulse contrast ratio for lasers and electron accelerators

Abstract

An apparatus and method for enhancing pulse contrast ratios for drive lasers and electron accelerators. The invention comprises a mechanical dual-shutter system wherein the shutters are placed sequentially in series in a laser beam path. Each shutter of the dual shutter system has an individually operated trigger for opening and closing the shutter. As the triggers are operated individually, the delay between opening and closing first shutter and opening and closing the second shutter is variable providing for variable differential time windows and enhancement of pulse contrast ratio.

Inventors:: Zhang, Shukui; Wilson, Guy

Issue Date:: Tue Sep 23 00:00:00 EDT 2014

Research Org.:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1159842

Patent Number(s):: 8842703

Application Number:: 13/385,728

Assignee:: Jefferson Science Associates, LLC (Newport News, VA)

Patent Classifications (CPCs):: H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT

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H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT
H01S3/005 - {Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
H01S3/0085 - {Modulating the output, i.e. the laser beam is modulated outside the laser cavity}
H01S3/1106 - {Mode locking}

Show less

DOE Contract Number:: AC05-06OR23177

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

Citation Formats


                    Zhang, Shukui, and Wilson, Guy. Practical method and device for enhancing pulse contrast ratio for lasers and electron accelerators.  United States: N. p., 2014. 
        Web.

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                    Zhang, Shukui, & Wilson, Guy. Practical method and device for enhancing pulse contrast ratio for lasers and electron accelerators.  United States.

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                    Zhang, Shukui, and Wilson, Guy. Tue .  
        "Practical method and device for enhancing pulse contrast ratio for lasers and electron accelerators".  United States.  https://www.osti.gov/servlets/purl/1159842.

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@article{osti_1159842,

  title        = {Practical method and device for enhancing pulse contrast ratio for lasers and electron accelerators},

  author       = {Zhang, Shukui and Wilson, Guy},

  abstractNote = {An apparatus and method for enhancing pulse contrast ratios for drive lasers and electron accelerators. The invention comprises a mechanical dual-shutter system wherein the shutters are placed sequentially in series in a laser beam path. Each shutter of the dual shutter system has an individually operated trigger for opening and closing the shutter. As the triggers are operated individually, the delay between opening and closing first shutter and opening and closing the second shutter is variable providing for variable differential time windows and enhancement of pulse contrast ratio.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Sep 23 00:00:00 EDT 2014},

  month        = {Tue Sep 23 00:00:00 EDT 2014}

}

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Works referenced in this record:

Laser-beat-wave photocathode electron accelerator and electron radiation apparatus using the same
patent, November 2009

Huang, Yen-Chieh
US Patent Document 7,619,231
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7619231

System for generating coherent single-frequency single transverse mode light pulses
patent, June 2013

Estes, Lee E.
US Patent Document 8,462,828
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8462828

Industrial directly diode-pumped ultrafast amplifier system
patent-application, July 2005

Kafka, James D.; Zbou, Jianping; Aus-Der-Au, Juerg
US Patent Application 11/031500; 20050157382
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20050157382

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