Abstract
We previously proposed a dual FEL configuration on the UV Demo FEL at Jefferson Lab that would allow simultaneous lasing at FIR and UV wavelengths [1]. The FIR source would be an FEL oscillator with a short wiggler providing diffraction-limited pulses with pulse energy exceeding 50 microJoules, using the exhaust beam from a UVFEL as the input electron beam. Since the UV FEL requires very short pulses, the input to the FIR FEL is extremely short compared to a slippage length and the usual Slowly Varying Envelope Approximation (SVEA) does not apply. We use a non-SVEA code [2] to simulate this system both with a small energy spread (UV laser off) and with large energy spread (UV laser on).
Highlights
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Though subpicosecond lasers are routinely used in research, many experiments require the use of two synchronized lasers with very different wavelengths
For the far infrared (FIR) FEL we looked at two different cases, one with the UVFEL on and one with it off
Summary
This content has been downloaded from IOPscience. Please scroll down to see the full text. Ser. 493 012025 (http://iopscience.iop.org/1742-6596/493/1/012025) View the table of contents for this issue, or go to the journal homepage for more. Download details: IP Address: 129.57.114.96 This content was downloaded on 13/03/2014 at 13:37 Please note that terms and conditions apply
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