100 W Mode-locked Green Laser for GaAs Photoemission Guns

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-SC0011215
Agency Tracking Number: 210170
Amount: $148,819.27
Phase: Phase I
Program: SBIR
Awards Year: 2014
Solicitation Year: 2014
Solicitation Topic Code: 38e
Solicitation Number: DE-FOA-0000969
Small Business Information
3708 E. Columbia Street, Tucson, AZ, 85714-1962
DUNS: 800757598
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: Y
Principal Investigator
 Jihong Geng
 (520) 790-5468
Business Contact
 Jihong Geng
Title: Dr.
Phone: (520) 790-5468
Email: jgeng@advaluephotonics.com
Research Institution
To address the DOE need for a high-power laser source used for synchronous photoinjection of GaAs photoemission guns, AdValue Photonics proposes to develop a radio-frequency (RF) synchronized 100W green fiber laser source with a repetition rate near 1GHz. Although GHz-rate mode-locked solid-state/fiber lasers in the near infrared have been previously demonstrated, which could be used as a laser source for synchronous photoinjection applications, these lasers suffer from a reliability issue due to the use of fragile free-space bulk optics for their laser cavities, not to mention their difficulties in RF synchronization. We propose to develop a low-noise all-fiber laser system fundamentally mode-locked at 1GHz, which can be easily synchronized to an external RF reference signal. It is based on our proprietary glass fiber technology and extensive experience in phase-stabilized GHz-rate mode-locked laser development. In Phase I, we will design and fabricate highly Yb-doped fibers to build short-cavity mode- locked seed laser, and use the high-gain doped fibers to boost the power of the mode- locked 1m fiber laser up to 100W average power, thereby achieve a proof-of-concept demonstration with frequency doubling of the high-repetition-rate mode-locked fiber laser. If the project is carried over into Phase II and Beyond, the proposed technology will provide a robust light source not only for applications in advanced accelerators, but also for many other scientific and industrial applications, such as optical arbitrary waveform generations, ultra-stable microwave references, telecommunications, material processing, medical surgery, high harmonic generation, and frequency comb spectroscopy.

* Information listed above is at the time of submission. *

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