Speaker
Description
FELs have a long history of delivering intense tunable narrowband THz and IR radiation for a vast array of applications. Nearly all THz/IR FELs are oscillators that utilize an optical resonator to achieve the extremely high spectral brightness of transform-limited optical pulses. Due to the dynamics of the FEL process, FEL-oscillators must operate with an optical resonator “detuned” from perfect synchronization with the electron beam. This results in slippage of the carrier envelope phase (CEP) from pulse-to-pulse.
Recently, we have gained more understanding of the CEP slippage and in collaboration with the PhLAM Team (Uni de Lille) and partners at DESY, we are testing methods to measure the shot-to-shot CEP of the FELBE FELs. These methods have demonstrated the power of these techniques of metrology, and have also revealed that control and stabilization of the FEL CEP should be possible. This opens the door for the exploration of coherently driven phenomena requiring a CEP-stable driving field from the THz/IR FEL. These techniques also have vast potential for shot-to-shot electron beam diagnostics from other types of sources (e.g. CTR, CSR, THz generation from waveguides).
| I have read and accept the Privacy Policy Statement | Yes |
|---|