AgGaSe2 and AgGaS2

AgGaSe₂ and AgGaS₂

Crystal data:

Material		AgGaSe₂	Ag₃AsS₃
Crystal Symmetry		Tetragonal	Tetragonal
Point Group		42 m	42 m
Lattice Constant, Е	a c	5.990 10.882	5.757 10.305
Density, g/cm³		5.7	4.7

Thermal properties:

Material		AgGaSe₂	Ag₃AsS₃
Melting point, °C		997	851
Thermal Expansion Coefficient, 10^-6 / °K	\|\| Z ^ Z	- 7.8 + 16.8	- 13.2 +12.5
Thermal Conductivity, W / m ^. K at 300 K		NA	11.5
Heat capacity, J/mole ^. °C		104	100

Optical properties:

Material		AgGaSe₂	Ag₃AsS₃
Optical transmission, mm		0.73 - 18	0.50 - 13
Indices of Refraction at l, mm
1.06	n₀ n_e	2.7010 2.6792	2.4521 2.3990
5.3	n₀ n_e	2.6134 2.5808	2.3945 2.3408
10.6	n₀ n_e	2.5912 2.5579	2.3472 2.2934

Nonlinear optical properties:

Material		AgGaSe₂	Ag₃AsS₃
Laser Damage Threshold, MW/cm²		20 - 30	20 - 30
at pulse duration, ns		10 - 15	10 - 15
and l, mm		10.6	1.06
Nonlinear Optical Coefficient (pm/V) at 10.6 mm		d₃₆ = 58	d₃₆ = 18
Absorption Coefficient, cm^-1	at 1.064 mm at 10.6 mm	< 0.05 < 0.02	< 0.01 0.5 - 0.7
Phase Matching Range, mm	Type I, SHG Type II, SHG	3.1 - 12.8 4.7 - 8.1	1.8 - 11.2 2.5 - 7.7
Birefringence Walkoff at 5.3 mm		0.67°	0.76°

MAX. SIZES, mm	20 x 20 x 60	10 x 10 x 50

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