Descriptions:
Nd:YAG crystals (Neodymium
Doped Yttrium Aluminum Garnet) is widely used
in industrial, medical, military and scientific fields.. Nd:YAG crystals are
wildly used in all types of solid-state laser systems-frequency-doubled
continuous wave, high-energy Q-switched, and so forth.
Basic
properties:
|
Chemical Formula:
|
Nd:Y3Al5O12
|
|
Crystal Structure:
|
Cubic
|
|
Lattice Constant:
|
12.01Å
|
|
Melting Point:
|
1970°C
|
|
Density:
|
4.5g/cm3
|
|
Refractive Index
|
1.82
|
|
Thermal Expansion Coefficient:
|
7.8x10-6 /K <111>
|
|
Thermal Conductivity（w/m/k）:
|
14,20°C
10.5,100°C
|
|
Mohs Hardness:
|
8.5
|
|
Stimulated Emission Cross-Section:
|
2.8x10-19 cm-2
|
|
Relaxation Time of Terminal Lasing Level:
|
30ns
|
|
Radiative Lifetime:
|
550 us
|
|
Spontaneous Fluorescence:
|
230 us
|
|
Linewidth:
|
0.6nm
|
|
Pump Wavelength:
|
807.5nm
|
|
Polarized Emission:
|
Unpolarized
|
|
Thermal Birefringence
|
High
|
|
Pump Wavelength Absorption Band:
|
1nm
|
|
Loss Coefficient:
|
0.003cm-1@1064nm
|
HGO offers NdYAG
specifications:
|
Doping(atm%):
|
0.1% ~ 2.5%
|
|
Orientation:
|
<111> , <100>,<110>
crystalline direction
|
|
Wavefront Distortion:
|
λ/10 per inch @ 632.8 nm
|
|
Dimension Tolerances：
|
rods with diameter: +0.0/-0.05 mm , Length: ±0.1
mm
|
|
Surface Quality:
|
10/5 Scratch/Dig MIL-O-1380A
|
|
Parallelism:
|
< 10″
|
|
Perpendicularity:
|
< 5′
|
|
Clear Aperture:
|
> 90%
|
|
Surface Flatness:
|
< λ/10 @ 632.8 nm
|
|
Chamfer:
|
< 0.1 mm @ 45o
|
|
Barrel Finish
|
50-80 micro-inch (RMS) ,
|
|
Size
|
Upon customer request
|
|
Coating
|
AR/HR/PR coating upon customer’s request
|
|
Damage Threshold
|
750MW/CM2
at 1064nm, TEM00, 10ns, 10Hz
|
|
Quality Warranty Period
|
One
year under proper use
|
Slabs, thread
rod, Er:YAG, Yb:YAG,Cr:YAG, Ce:YAG, Tm:YAG, Ho:YAG and other ion doped YAG
crystals are also available upon request.
Advantages:
1)
High gain, High efficiency, Low threshold, Low loss at
1.06 µm
2)
Good thermal conductivity and thermal shock
characteristics
3)
Mechanical strength, High optical quality
4)
Various modes of operation (CW, pulsed, Q-switched, mode
locked)
Why
Choose HGO ?
HG
OPTRONICS.,INC. supplies large diameter neodymium doped
yttrium aluminum garnet Nd:YAG crystals. The use of high quality starting
materials for crystal growth, whole boule interferometry, and precise
measurement of Nd concentration using transmission spectroscopy and fluorescence
lifetime measurements, assures that each crystal will perform to customer
specifications.
Based on our diffusion bonding
technology various slabs, disks , rod-based ,
microchips especially in the form of Nd:YAG/Cr4+:YAG or other ion doped YAG
based passively q-switched are
all vailable to supply.
