Convert 1um Ultrafast Fiber Laser to 2um, and Pulses Less than 100Fs

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$99,903.00
Award Year:
2009
Program:
STTR
Phase:
Phase I
Contract:
DE-FG02-09ER86393
Award Id:
90394
Agency Tracking Number:
90052
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
1855 South 57th Court, Boulder, CO, 80301
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
160115093
Principal Investigator:
SterlingBackus
Dr
(303) 544-9068
sbackus@kmlabs.com
Business Contact:
SterlingBackus
Dr
(303) 544-9068
sbackus@kmlabs.com
Research Institute:
Colorado School of Mines
Ralph Brown
Office of Research Administration
Golden, CO, 80401 1887
(303) 273-3910
Nonprofit college or university
Abstract
Ultrafast mid-IR sources are necessary for seeding the E-SASE FELs (enhanced self-amplified spontaneous emission free electron lasers) used at DOE facilities. These sources need to have ~mJ energies and very high (100 kHz) repetition rates at ~ 2-2.2 µm wavelength. While commercially available Ti:sapphire/OPA systems can certainly deliver mJ energy pulses at 2µm, they lack the high repetition frequency required for this application. Also, Ti:sapphire systems have large footprints and cost 100s of thousands of dollars. Therefore, this project will develop a method for using an ultrafast, 1µm amplified fiber laser system and an OPA for amplification at high repetition rates in cryo-cooled Cr:ZnS. In Phase I, a 1µm fiber light will be frequency converted to ~2µm in a white-light-seeded OPA, which will more than double the spectrum. Cross polarization wave generation (XPW) will be used to further broaden the bandwidth of the 2µm. The output will then be ready for final amplification in Cr:ZnS. Phase II will involve building a prototype and testing viability in a cryo-cooled Cr:ZnS system. Commercial applications and other Benefits as described by the awardee: The method should allow the current Ti:sapphire system to be replaced with a significantly lower-cost solution. Other benefits include the production of eye-safe high-average-power ultrafast (<50 fs) laser systems at a reasonable price, and more compact high-harmonic systems for soft x-ray generation.

* information listed above is at the time of submission.

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