AGS(AgGaS2) crystals


  • Lattice parameters: a = 5.757, c = 10.311 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: ε11s=10ε11t=14
  • Product Detail

    Technical Parameters

    Test Report

    Stock list

    AGS is transparent from 0.50 to 13.2 µm. Although its nonlinear optical coefficient is the lowest among the mentioned infrared crystals, high short wavelength transparency edging at 550 nm is made use of in OPOs pumped by Nd:YAG laser; in numerous difference frequency mixing experiments with diode, Ti:Sapphire, Nd:YAG and IR dye lasers covering 3–12 µm range; in direct infrared countermeasure systems, and for SHG of CO2 laser. Thin AgGaS2 (AGS) crystal plates are popular for ultrashort pulse generation in mid IR range by difference frequency generation employing NIR wavelength pulses.

    Applications:
    • Generation second harmonics on CO and CO2 - lasers
    • Optical parametric oscilator
    • Different frequency generator to middle infrared regions up to 12μm.
    • Frequency mixing in the middle IR region from 4.0 to 18.3 µm
    • Tuneable solid state lasers (OPO pumped by Nd:YAG and others lasers operating in 1200 to 10000 nm region with efficiency 0.1 to 10 %)
    • Optical narrow-band filters in the region near isotropic point (0.4974 m at 300 °K), transmission band being tuned at temperature variation
    • Up-conversion of CO2 laser radiation image into near-IR or visible region by using/ or use of Nd:YAG, ruby or dye lasers with efficiency up to 30 %
    Basic Properties
    Lattice parameters a = 5.757, c = 10.311 Å
    Non-linear coefficient at 10.6 um d36 = 12.5 pm/V
    Optical damage threshold at 10.6 um, 150 ns 10 - 20 MW/cm2
    parallel to c-axis 12.5 x 10-6 x °C-1
    perpendicular to c-axis -13.2 x 10-6 x °C-1
    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=10ε11t=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

     

    Technical Parameters
    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

    测试图1图片2

    Model

    Product Size Orientation Surface Mount

    Quantity

    DE0053

    AGS 5*5*0.5mm θ=41.3°;φ=0° AR/AR@1.1-2.6μm+2.6-12μm Unmounted

    1

    DE0093

    AGS 8*8*1mm θ=39°;φ=45° Both sides polished φ25.4mm

    3

    DE0119

    AGS 8*8*1mm θ=39°;φ=45° AR/AR@1.1-2.6μm+2.6-12μm φ25.4mm

    2

    DE0119-0

    AGS 8*8*1mm θ=39°;φ=45° AR/AR@1.1-2.6μm+2.6-12μm LightCon

    2

    DE0119-3

    AGS 8*8*1mm θ=39°;φ=45° AR/AR@1.1-2.6μm+2.6-12μm Unmounted

    2

    DE0119-1

    AGS 8*8*1mm θ=37°;φ=45° AR/AR@1.1-2.6μm+2.6-12μm Unmounted

    8

    DE0149

    AGS 8*8*0.38mm θ=41.6°;φ=45° AR/AR@1.1-2.6μm+2.6-12μm Unmounted

    1

    DE0367

    AGS 8*8*0.4mm θ=39°;φ=45° AR/AR@1.1-2.6μm+2.6-12μm φ25.4mm

    3

    DE0367-0

    AGS 8*8*0.4mm θ=39°;φ=45° AR/AR@1.1-2.6μm+2.6-12μm Unmounted

    4

    DE0367-1

    AGS 8*8*0.4mm θ=37°;φ=45° AR/AR@1.1-2.6μm+2.6-12μm Unmounted

    8

    DE0367-2

    AGS 8*8*0.4mm θ=37°;φ=45° AR/AR@1.1-2.6μm+2.6-12μm φ25.4mm

    1

    DE0741

    AGS 5*5*1mm θ=39°φ=45° Both sides polished Unmounted

    5

    DE0742

    AGS 5*5*0.4mm θ=39°φ=45° Both sides polished Unmounted

    6

    DE0743

    AGS 6*6*2mm θ=54.9°φ=45° Both sides polished Unmounted

    1