Temporal shaping of narrow-band picosecond pulses via noncolinear sum-frequency mixing of dispersion-controlled pulses
Randy Lemons, Nicole Neveu, Joseph Duris, Agostino Marinelli, Charles G. Durfee, Sergio Carbajo
Abstract
A long-sought-after goal for photocathode electron sources has been to improve performance by temporally shaping the incident excitation laser pulse. The narrow bandwidth, short wavelength, and picosecond pulse duration make it challenging to employ conventional spectral pulse shaping techniques. We present a novel and efficient intensity-envelope shaping technique achieved during nonlinear upconversion through opposite-chirp sum-frequency mixing. We also present a numerical case study of the linac coherent light source-II photoinjector where transverse electron emittance is improved by at least 25%.
Topics & Concepts
Photon upconversionOpticsChirpPicosecondPhotocathodePhysicsBandwidth-limited pulsePulse shapingLaserBandwidth (computing)Pulse (music)Envelope (radar)Dispersion (optics)Ultrashort pulseMixing (physics)ExcitationFemtosecond pulse shapingElectronTelecommunicationsComputer scienceDetectorRadarQuantum mechanicsParticle Accelerators and Free-Electron LasersGyrotron and Vacuum Electronics ResearchLaser-Matter Interactions and Applications