Title: Method for optimizing output in ultrashort-pulse multipass laser amplifiers with selective use of a spectral filter

Abstract

A method for optimizing multipass laser amplifier output utilizes a spectral filter in early passes but not in later passes. The pulses shift position slightly for each pass through the amplifier, and the filter is placed such that early passes intersect the filter while later passes bypass it. The filter position may be adjust offline in order to adjust the number of passes in each category. The filter may be optimized for use in a cryogenic amplifier.

Inventors:

Backus, Sterling J ^[1]; Kapteyn, Henry C ^[2]

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+ Show Inventor Affiliations

1. Erie, CO
2. Boulder, CO

Issue Date:

2007-07-10

Research Org.:

Univ. of California (United States)

Sponsoring Org.:

USDOE - National Nuclear Security Administration (NNSA)

OSTI Identifier:

913143

Patent Number(s):

7242520

Application Number:

11/501,206

Assignee:

The Regents of the University of Colorado (Boulder, CO)

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

H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04B - TRANSMISSION

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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

H01S2301/02 - ASE
H01S2301/04 - Gain spectral shaping, flattening
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
H01S3/0057 - {Temporal shaping, e.g. pulse compression, frequency chirping
H01S3/0078 - {Frequency filtering}
H01S3/025 - {of solid state lasers, e.g. housings or mountings}
H01S3/0407 - {Liquid cooling, e.g. by water}
H01S3/10023 - {by functional association of additional optical elements, e.g. filters, gratings, reflectors}
H01S3/1625 - {titanium}
H01S3/1636 - {Al2O3
H01S3/2325 - {Multi-pass amplifiers, e.g. regenerative amplifiers}

H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04B - TRANSMISSION

H04B10/25073 - {using spectral equalisation, e.g. spectral filtering}

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DOE Contract Number:  

FG03-02NA00063

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

47 OTHER INSTRUMENTATION