AgGaSe2

AgGaSe<sub>2</sub>” class=”wp-image-3929″/></div><div class=
Download the Product Sheet

AgGaSe2 (Silver Gallium Selenide Crystal), AGSe crystal, is a group I-III-Ⅵ2 ternary compound semiconductor with a chalcopyrite structure and a 4-2 m point group. It is an excellent mid- and far-infrared nonlinear optical material, which can transmit infrared light from 0.73 to 21 μm, with a large nonlinear coefficient (d36=43×10-12 m/V), suitable birefringence, phase matching for the second harmonic in the range of 3 to 18 μm. It is an effective crystal material for mid-infrared laser frequency doubling and has excellent three-wave nonlinear interaction (OPO) properties. It is an effective crystal material for mid-infrared laser multiplication and has excellent three-wave nonlinear interaction (OPO) properties. The available waveband is 0.9-16 μm. 2.5-12 μm OPO tuned light source is obtained by pumping AgGaSe2 crystal with Ho:YLF 2.05 μm; 1.9-5.5 μm tuned light source is output by non-critical phase matching OPO pumped with 1.4-1.55 μm tuned light source.

Features of AgGaSe2

  • Large transmission range: from 0.73 to 18 μm
  • Low optical absorption and low scattering
  • Application wavelengths up to 17 μm in the mid-IR
  • High FOM (quality factor) for nonlinear interactions in NIR and MIR
  • High frequency doubling efficiency for mid-infrared lasers
  • Tunable OPO for solid-state lasers with efficiencies up to 10% optical narrowband filtering in the region around each homogeneity point

Physicochemical Properties

Chemical Formula
AgGaSe2
Crystal Structure
Tetragonal
Lattice Constant
a=5.9920Å，c=10.8803Å
Optical SymmetryUniaxial Negative (no>ne，λ<804 nm ne>no)
Density
5.7g/cm3
Mohs Hardness

3-3.5
Transparency range
0.71-19μm
Sellmeier Equation @T=293 K(λ in μm)no2=6.8507+0.4297/(λ2-0.1584)-0.00125λ2;
ne2=6.6792+0.4598/(λ2-0.2122)-0.00126λ2
Refractive Index @10.5μmno=2.5917，ne= 2.5585
Thermal Conductivity @T=293 K1 (||c) Wm-1K-1, 1,1 (⊥c) Wm-1K-1
Damage Threshold
>10MW/cm2@10.6μm，150 ns
Melting Point
851℃
Band Gap1.83eV
Clock Multiplier Factor33pm/V
Birefringence
0.0246@1.06μm
0.0317@5.3μm
0.0332@10.6μm

Processing Parameters

Orientation Accuracy<±0.1°
Surface Finish30/20 per MIL-O-13830A 
Face Shapeλ/8@632.8nm for T>=1mm
Clear Surface Tolerance+0/-0.1mm
Length Tolerance±0.1mm
Parallelism30″
Perpendicularity10′
Bevel<0.2mm×45°

Spectrum

Nonlinear crystal AgGaSe2 phase-matching-CRYLINKNonlinear crystal AgGaSe2 transmittance-CRYLINK
Type Ⅰ OPO and SHG phase matching curveTransmission spectra of 18 mm long uncoated AgGaSe2 crystals
Nonlinear crystal AgGaSe2 transmittance-CRYLINK
Transmission spectra of 25 mm long coated AgGaSe2 crystals

If you are intereted in AgGaSe2, please click the button below to enquire or ask for a samplel.

Inquiry/Sample

Related article(s) with AgGaSe2:

There is no related article with this product, please visit our articles page to find out more.

Related case study with AgGaSe2:

There is no related case study with this product, please visit case study page to find out more.

Related solution(s) with AgGaSe2:

Related video(s) with AgGaSe2:

There is no related video(s), please visit videos page to find out more.

Scroll to Top