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|
| AgGaS2 and AgGaSe2(Silver
Gallium Sulfide and Silver Gallium Selenite): |
| Basic
Properties of AgGas2 AgGaSe2： |
|
| 1.
Structural and Physical Properties |
|
| Crystal |
AgGaS2 |
AgGaSe2 |
| Crysral structure |
Tetragonal 42m, |
Tetragonal 42m, |
| Cell parameters |
a=5.756, c=10.3050 |
a=5.992, c=10.8863 |
| Melting (℃) |
1002 |
860 |
| Density (g/cm3) |
4.702 |
5.700 |
|
| Absorption coefficients ( cm-1) |
| @1.064μm |
0.01 |
＜0.05 |
| @10.6μm |
0.6 |
＜0.02 |
| Resistance |
＞1012 |
-- |
|
| Relative dielectric constant |
| ε11s /ε0@25MHz |
10 |
10.5 |
| ε33s /ε0@25MHz |
14 |
12.0 |
|
| Thermal expansion coefficients |
| (10-6/℃) ∥C |
+12.5 |
+16.8 |
| ⊥C |
-13.2 |
-7.8 |
|
| Thermal conductivity (W/cm/℃) 0.015 |
unavailable |
| 2.
Linear Optical Properties |
|
| Crystal |
AgGaS2 |
AgGaSe2 |
| Transparency range ( nm) |
0.50-13.2 |
0.78-18.0 |
|
| Refractive indices |
no |
ne |
no |
ne |
| @ 1.064 μm |
2.4521 |
2.3990 |
2.7010 |
2.6792 |
| @ 5.300 μm |
2.3945 |
2.3408 |
2.6134 |
2.5808 |
| @ 10.60 μm |
2.3472 |
2.2934 |
2.5912 |
2.5579 |
|
| Wavelength @ no=ne (μm) |
0.4974 |
0.811 |
|
| Them-optic coefficients: |
dno /dt(10-5/ ℃ ) |
15.4 |
~15 |
| dne/dt(10-5/ ℃ ) |
15.5 |
~15 |
| Sellmeier equations : |
| AgGaS2 |
| no2( λ )=3.3970+2.3982/(1-0.09311/ λ2 )+2.1640/(1-950/
λ2) ( λ in μm) |
| ne2( λ )=3.5873+1.9533/(1-0.11066/ λ2 )+2.3391/(1-1030.7/
λ2 ) |
| AgGaSe2 |
| no2( λ )=4.6453+2.2057/(1-0.1879/ λ2 )+1.8577/(1-1600/
λ2 ) ( λ in μm) |
| ne2( λ )=5.2912+1.3970/(1-0.2845/ λ2 )+1.9282/(1-1600/
λ2) |
| 3.
Nonlinear Optical Properties |
|
| Crysral |
AgGaS2 |
AgGaSe2 |
| Phase-matching SHG output range(μm) |
1.8-11.2 |
3.1-12.8 |
| NLO susceptibilities d 36 (pm/V) SHG@10.64μm
|
18 |
58 |
| Linear electri-optic coefficients: |
| γ41T |
4.0±0.2 |
4.5@1.15μm |
| γ63T |
3.0±0.1 |
3.9@1.15μm |
| Damage threshold (MW/cm 2
) |
| @~10ns, 1.064 μm |
25, surface |
surface 20-30 |
| @~10ns, 10.6 μm |
＞ 500 bulk |
＞ 500 bulk |
