專業GaSe crystals廠商

4Lasers offer z-cut, cleaved surface and mounted gallium selenide (GaSe) crystals. Custom clear apertures and crystal thicknesses from tens of microns up to several millimeters are available upon request. Due to fragile nature of GaSe it is not possible to apply antireflection coatings.

Main features

• Broad transparency range from 0,65 μm to 18 μm
• Large nonlinearity and birefringence
• Soft and cleaves along [001] plane 
• Cannot be cut and polished at certain angles
• Comes uncoated and mounted for proper handling

Application examples

• Broadband mid-IR difference frequency generation
• Second harmonic (SH) of CO2, CO, dye lasers
• Terahertz (THz) generation by optical rectification
• Terahertz detectors for terahertz time domain spectroscopy (THz-TDS)