Nd:YAG Solid Laser 3-2 / A-1 on the ground

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Presentation transcript:

Nd:YAG Solid Laser System @ 3-2 / A-1 on the ground 2016/6/10

Yb fiber and Nd:YAG multi-stage solid laser @ 3-2

Yb fiber laser for 1064 nm Output power : 100 mW (Pulse energy : 0.88nJ) Spectrum 114MHz Pulse train

Strecher and pre-amplifier for 1064 nm Output power : 1.0 W (Pulse energy : 0.1μJ) Spectrum 10MHz Pulse train

Nd:YAG amplifier

Nd:YAG amplifier

Wavelength conversion To RF-Gun From amplfier

Laser injection to 3-2 RF-Gun

2016/3/29 ～ 30 GR_32 Study ・Laser energy 4.0mJ@1064nm 550uJ@532nm ・Under beam comissioning SC_32_4R SC_32_4

Yb fiber and Nd/Yb solid laser system on the A-1 ground Yb fiber part (already installed) Repetition frequency 114.24MHz Wavelength selection 1030nm & 1064nm Repetition frequency 10MHz 1064nm oscillator (ANDi type) Grating stretcher (Transmission) SOA pulse picker Yb single mode fiber amp Menlo 1030nm oscillator FBG Yb-doped double clad fiber amp ASE rejection grating pair 1030nm oscillator (ANDi type) 1064nm 1030nm 1030nm oscillator (10.38 MHz) EO pulse picker Yb:YAG Thin disk regenerative amplifier 1064nm Nd:YAG regenerative amplifier Cryogenic Yb:YAG Thin disk main amplifier Nd:YAG main amplifier Nd:YAG for Phase-II Output(1064nm) Output(1030nm) Yb:YAG for Phase-III 96ns Delay => Combine => SHG => FHG

EO module pulse picker Pulse pick result Repetition frequency : 10Hz

Nd:YAG Diode-pumped solid-state (DPSS) Laser ○ 4-state laser is easy to operate. ○ High power pump LD is available. ○ High gain efficiency. ○ Large crystal is available × Small gain bandwidth. (Gaussian) 1.1% Dia. 4×93mm AR/AR@1064nm

Nd:YAG regenerative amplifier

On-going R&D for Nd Laser Final amplifier for 5 nC generation => Nd disk stack laser with 885nm direct pump (Collaboration with IMS and Hamamatsu) Nd disk stack laser λ/4 Input 885nm 10 kW High Power Laser Diode Stack (Hamamatsu) Pump Output AR@pump HR@laser Room temperature bonding @ IMS

Three level laser of Nd

885nm Direct Pump

Summary Two Nd solid laser system are almost ready at 3-2 RF-Gun (Multi-stage) and A-1 RF-Gun (Regenerative amplifier). Final amplifier for high charge generation is under development.