Account

AgGaS2 Crystals

AgGaS2 Crystals
AgGaS2 Crystals AgGaS2 Crystals

Silver Gallium Sulfide (AgGaS2, AGS) crystal is useful for the near and mid-infrared applications due to its large nonlinear optical (NLO) coefficients and high transmission in the IR region. The phase matching and transmission characteristics of AgGaS2 allow 3-wave interactions involving a very wide wavelength range in the near and mid-IR. It has been used as an efficient NLO crystal for 3 - 10 µm IR generation, particularly for OPO/OPA devices pumped by Nd:YAG laser @ 1064nm or Ti:sapphire laser @ 800 nm, and frequency mixing (SFG or DFG) of OPO/OPA outputs pumped by Ti:Sapphire or Nd:YAG laser. AgGaS2 has also been demonstrated to be an efficient frequency doubling crystal for infrared radiation such as 10.6 μm from CO2 lasers. 

Newlight Photonics offers AgGaS2 crystals with a typical aperture of 5x5 mm. Larger apertures up to 10x10 mm are available upon request.

Please use "Add to Cart" to place the interesting products in the shopping cart. Check out with online payment or ask us for the prices/availability via the shopping cart. Filters below or the form at the bottom can be used to assist product search or make further inquiries.
Application:
Thickness:
Part No. Description Application Thickness Price Availability Add to Cart

 

Structure and Physical Properties:
 

Crystal Structure Tetragonal
Cell Parameters a=5.756 Å, c=10.301 Å
Melting Point 997 °C
Density 4.702 g/cm3
Mohs Hardness 3-3.5
Absorption Coefficient 0.6 cm-1 @ 10.6 µm
Relative Dielectric Constant @ 25 MHz ε11s=10
ε11t=14
Thermal Expansion Coefficient  ||C: -13.2 x 10-6 /oC
⊥C: +12.5 x 10-6 /oC
Thermal Conductivity 1.5 W/M/°C

 

Linear Optical Properties:
 
Transparency Range

0.50-13.2 µm

Refractive Indices
@ 1.064 µm
@ 5.300 µm
@ 10.60 µm
 no
2.4521
2.3945
2.3472
ne
2.3990
2.3408
2.2934
Thermo-Optic Coefficients

dno/dt=15.4 x 10-5 /°C
dne/dt=15.5 x 10-5 /°C

Sellmeier Equations
(λ in µm)
no2=3.3970+2.3982/(1-0.09311/λ2)+2.1640/(1-950/λ2)
ne2=3.5873+1.9533/(1-0.11066/λ2)+2.3391/(1-1030.7/λ2)

 
Nonlinear Optical Properties:
 

Phase-Matching SHG Range
1.8-11.2 µm
NLO Coefficients @ 1.064 µm
d36=d24=d15=23.6 pm/V
Linear Electro-optic Coefficients
γ41T=4.0 pm/V
γ63T=3.0 pm/V
Damage threshold
         @ ~ 10 ns, 1.064 µm
25 MW/cm2 (surface),
500 MW/cm2 (bulk)



Typical Transmission Curve (L=10 mm, Internal):

 


Specifications of AGS components:
 

Wavefront distortion: less than λ/6 @ 633 nm 
Dimension tolerance: (W +/-0.1 mm) x (H +/-0.1 mm) x (L +0.2 mm/-0.1 mm) 
Clear aperture: > 90% central area 
Flatness: λ/6 @ 633 nm for T>=1.0mm
Surface Quality: Scratch/dig 20/10 per MIL-O-13830A 
Parallelism: better than 1 arc min. 
Perpendicularity: 5 arc minutes
Angle tolerance: Δθ < +/-0.25o, Δφ < +/-0.25o

 

If you do not find the suitable products above, you may let us know your requirements or applications in the form below. Our sales or technical staff will get back to you as soon as possible.

Please provide your contact information for us to get back to you:

Name:
Title:
Organization:
Work Phone:
E-Mail Address:
Enter the code in the box below:
 
 
Newlight Photonics Inc. © 2017