SHG materials: Gallium Selenide (GaSe) crystals

Another material which is very suitable for SHG in the mid-IR is Gallium Selenide (GaSe) non-linear optical single crystal. GaSe crsytals combines a large non-linear coefficient, a high damage threshold and a wide transparency range. The frequency-doubling properties of GaSe were studied in the wavelength range between 6.0 µm and 12.0 µm

GaSe crystals has extremely low Mohs hardness, which makes GaSe  very fragile and eliminates possibility to apply mechanical treatment or coatings.

GaSe is best suited for electronic and optical applications.

• High power femtosecond lasers;
• Terahertz (THz) generation;
• Alternative solution for broadband middle infrared (MIR) electromagnetic waves generation
• 2nd Harmonic generation (SHG) in middle infrared (MIR), for CO, CO2, Dye lasers, etc
• Up-conversion: Infrared (IR) to near infrared (NIR) range