WANG Xingtao LAN Taihe LIU Bo SHEN Lei FENG Lie YAO Haifeng ZHANG Wenyan WANG Dong. Seed laser transmission and injection system for the Shanghai Deep-Ultraviolet Free-Electron Laser test facility[J]. Nuclear techniques, 2013, 36(5): 050103
WANG Xingtao LAN Taihe LIU Bo SHEN Lei FENG Lie YAO Haifeng ZHANG Wenyan WANG Dong. Seed laser transmission and injection system for the Shanghai Deep-Ultraviolet Free-Electron Laser test facility[J]. Nuclear techniques, 2013, 36(5): 050103 DOI: 10.11889/j.0253-3219.2013.hjs.36.050103.
Seed laser transmission and injection system for the Shanghai Deep-Ultraviolet Free-Electron Laser test facility
Background:Free electron laser(FEL) has developed several high gain work modes
including high gain harmonic generation(HGHG)
echo-enabled harmonic generation(EEHG)
cascade HGHG
etc.Such modes have special advantages but all need external seed laser to modulate the electron beam.Purpose:To carry out such experiments at Shanghai Deep-Ultraviolet Free Electron Laser test facility(SDUV-FEL)
a new seed laser system has been established.Methods:The system is consisting of Ti:sapphire laser
optic parameter amplifier(OPA)
laser transport line and synchronize measurement system.Results:By such system
wide variation rang of seed laser wavelength(1140-2600 nm) and sub-picosecond level synchronization between seed laser and electron beam have been achieved.Conclusions:We have succeeded carry out HGHG and EEHG experiments at SDUV-FEL and the results show that the seed laser could effectively modulate electron beam.