Silver Gallium Selenide (AGSe)
AgGaSe2 silver selenide crystal, referred to as AGSe crystal for short, is one of the most effective crystal materials for frequency doubling of mid-infrared laser, and it also has excellent performance of three-wave nonlinear interaction (OPO). The useful light transmission range of AGSe crystal is 0.9-16μm, and it has wide phase matching ability. With the mature laser pumping, the OPO of AGSe crystal shows wide infrared tunable performance. Pumping AgGaSe2 crystal with Ho:YLF 2.05μm to obtain 2.5-12μm OPO tuned light source; Non-critical phase matching OPO pumped by 1.4-1.55 μm tuning light source outputs 1.9-5.5 μm tuning light source; Frequency doubling of pulsed CO2 laser.

We are available 24/7 by e-mail, whatsapp or by phone. You can also use our quick contact form to ask a question about our products.

Submit

Product Description:


Nature and Characteristics:

   

AgGaSe2 silver selenide crystal, referred to as AGSe crystal for short, is one of the most effective crystal materials for frequency doubling of mid-infrared laser, and it also has excellent performance of three-wave nonlinear interaction (OPO). The useful light transmission range of AGSe crystal is 0.9-16μm, and it has wide phase matching ability. With the mature laser pumping, the OPO of AGSe crystal shows wide infrared tunable performance. Pumping AgGaSe2 crystal with Ho:YLF 2.05μm to obtain 2.5-12μm OPO tuned light source; Non-critical phase matching OPO pumped by 1.4-1.55 μm tuning light source outputs 1.9-5.5 μm tuning light source; Frequency doubling of pulsed CO2 laser.



Main Applications:


• AgGaSe2 crystal has high frequency doubling efficiency for mid-infrared lasers 

• AGSe crystals can be used for optical parametric amplification, optical parametric oscillation, and difference frequency generation, with application wavelengths up to 16μm in the mid-infrared.

• Basic characteristics of optical narrowband filtering of silver gallium selenide crystals near the isotropic point


Basic Parameters:


Transmission Range0.73 – 18 μm
Lattice Constanta=5.992 Å, c=10.886 Å
Density5.70 g/cm³
Mohs Hardness3.0 - 3.5
Nonlinear Coefficient(d36)=33 pm/V @ 10.6 μm
Melting Point851℃
Absorptivity<0.02 cm⁻¹ @ 1.064 µm
Thermal Conductivity1.0 W/M/°C
SHG Phase Matching1.8-11.2 μm
Damage Threshold>10 MW/cm² @50 ns, 10.6 μm
Thermal Expansivity(//)C: -16.0 x 10⁻⁶ /℃
(⊥)C: +18.0 x 10⁻⁶ /℃


Processing Parameters:

Orientation Accuracy<±0.1°
Surface Quality20/10 per MIL-O-13830A
Surface Flatnessλ/8 @ 632.8 nm for T ≥ 1mm
Clear Aperture Tolerance+0/-0.1 mm
Length Tolerance±0.1 mm
Parallelism30″
Perpendicularity10′



Related product recommendations