Download NdYAG Solid Laser

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
To Linac Tunnel
Laser shutter
Wavelength
convertion
Amp
Pulse
picker
Strecher &
Fiber
preamp
Fiber
oscillator
Optical surface plate
Doorway
Laser Hut
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
To wavelength conversion
Nd:YAG Amplifier　φ4mm
Nd:YAG Amplifier　φ4mm
600.0mm
50.0mm
125.0mm
150.0mm
75.0mm
Isolator
175.0mm
F:-50mm
Telescope(x2)
F:100mm
125.0mm
50.0mm
Nd:YAG Amplifier　φ2mm 50.0mm
50.0mm
50.0mm
100.0mm
100.0mm
Isolator
Isolator
Nd:YAG Amplifier　φ2mm
150.0mm
F:400mm
λ/4 wave plate
200.0mm
300.0mm
λ/4 wave plate
λ/2 wave plate
250.0mm
450.0mm
pockels cell
450.0mm
1200.0mm
λ/4 wave plate
λ/2 wave plate
pockels cell
75.0mm
F:-50mm
λ/2
wave plate
F:200mm
295.0mm
Telescope(x4)
100.0mm
λ/2
wave plate
125.0mm
75.0mm
From
fiber
preamp
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
120uJ@226nm
・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
1064nm oscillator
(ANDi type)
Grating stretcher
(Transmission)
Menlo
1030nm oscillator
Repetition frequency
10MHz
SOA
pulse picker
Yb single mode
fiber amp
FBG
Yb-doped double clad
fiber amp
1030nm oscillator
(ANDi type)
ASE rejection
grating pair
1064nm
1030nm oscillator
(10.38 MHz)
EO pulse picker
Yb:YAG Thin disk
regenerative amplifier
1064nm
Nd:YAG
regenerative amplifier
Nd:YAG
main amplifier
Nd:YAG
for Phase-II
1030nm
Cryogenic Yb:YAG Thin disk
main amplifier
Output(1064nm)
96ns Delay => Combine => SHG => FHG
Output(1030nm)
Yb:YAG
for Phase-III
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
885nm
10 kW High Power
Laser Diode Stack
(Hamamatsu)
λ/4
Pump
Inpu
t
Outpu
t
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.