Free Electron Lasers (FEL) Sources

Free-Electron Laser (FEL) sources can produce high-power, tunable radiation in intense pulses across a large portion of the electromagnetic spectrum. AES FEL-related activities range from mm-waves to X-rays. AES designed, fabricated and operated the Compact Infrared FEL (CIRFEL) at Princeton University, making us one of the very few companies that have succeed in obtaining FEL lasing on their own equipment removed from National Laboratory facilities and assistance. We also supported the design and fabrication of the 10 kW IR Upgrade FEL at the Thomas Jefferson National Accelerator Facility (JLAB) and are active in many aspects of the ongoing Navy FEL program.

CIRFEL

Compact, affordable free-electron lasers, such as the CIRFEL, which originally operated at Princeton University and is being reassembled at the University of Maryland, can provide high-peak-power, tunable radiation for research, medical, biomedical and material processing applications. The particular advantage of such photocathode-accelerator-driven FELs for these applications is their high brightness and picosecond pulse structure which yields very high peak dose with efficient energy deposition and minimal collateral damage. The broadband tunability of FELs permits the excitation of resonance phenomena and generates many different uses. AES is developing these devices for the surface treatment of materials, near-field IR microscopy, biomedical and other applications.

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JLAB IR FEL Upgrade

Amongst other activities, AES supported the design of the bending magnets for the JLAB IR Upgrade FEL (link here to magnet analysis picture) and designed and fabricated the optical klystron wiggler, in conjunction with Laboratory personnel, used in the recent 8.5 kW CW IR demonstration at 6 microns (check it was 6). We also completed the engineering design and procurement of the high-power THz beamline that was recently commissioned at the FEL and are about to deliver a 100 mA-capable electron injector for assembly and testing that will serve as the driver for a next-generation 100 kW-level FEL (link to DC gun and booster plus papers).

 

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Navy FEL Program

AES is active in various aspects of the ongoing Navy FEL program. Specific specialties are the high-current injectors (links to injectors) and the high-power RF couplers needed for these devices, and the systems modeling of systems configured for Navy applications.

 

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