GaSe Crystals, 2mm Length

Gallium selenide (GaSe) is a common infrared nonlinear crystal. Alfa Chemistry offers various types of GaSe crystals. Custom clear apertures and crystal thicknesses from tens of microns to several millimeters are available upon request.

Request bulk or custom formats

Catalog Number

ACMA00027414

Product Name

GaSe Crystals, 2mm Length

Molecular Formula

GaSe

Melting Point

1233 °C

Diameter

ø7 mm

Length

2 mm

DimensionTolerance

ø±0.1mm/L±0.1mm

Theta(Θ)

Z cut

Coating

uncoated

Surface Quality

Cleaved surfaces

ClearAperture

⌀5 mm or custom

Crystal Structure

Hexagonal, -62m

Lattice Parameters

a= 3.742 Å, c= 15.918 Å

Optical Symmetry

Negative uniaxial (no>ne)

Density

5.03 g/cm³

Transparency Region

0.62-20 μm @ “0” transmittance level

Refractive Indices

no = 2.8158; ne = 2.4392 @10.6 μm

Walk Off Angle

3.4 deg at 5.3 µm

Sellmeier Equations

no2 = 7.443 + 0.4050/λ2 + 0.0186/λ4 + 0.0061/λ6 + 3.1485 λ2/(λ2 - 2194); ne2 = 5.76 + 0.3879/λ2 - 0.2288/λ4 + 0.1223/λ6 + 1.8550 λ2/(λ2 - 1780)

Moh'sHardness

≈ 0

MSDS

COA

Spec Sheet

Features And Benefits

1. Wide transparency range from 0.65 μm to 18 μm 2. Large nonlinearity and birefringence 3. Soft and split along the [001] plane 4. Cannot be cut and polished at certain angles

Application

1. Broadband mid-infrared difference frequency generation 2. Second Harmonic (SH) of CO2, CO, Dye Lasers 3. Generation of terahertz (THz) through optical rectification 4. Terahertz Detector for Terahertz Time Domain Spectroscopy (THz-TDS)

• Catalog Number: ACMA00027414
• Product Name: GaSe Crystals, 2mm Length
• Molecular Formula: GaSe
• Melting Point: 1233 °C
• Diameter: ø7 mm
• Length: 2 mm
• DimensionTolerance: ø±0.1mm/L±0.1mm
• Theta(Θ): Z cut
• Coating: uncoated
• Surface Quality: Cleaved surfaces
• ClearAperture: ⌀5 mm or custom
• Crystal Structure: Hexagonal, -62m
• Lattice Parameters: a= 3.742 Å, c= 15.918 Å
• Optical Symmetry: Negative uniaxial (no>ne)
• Density: 5.03 g/cm³
• Transparency Region: 0.62-20 μm @ “0” transmittance level
• Refractive Indices: no = 2.8158; ne = 2.4392 @10.6 μm
• Walk Off Angle: 3.4 deg at 5.3 µm
• Sellmeier Equations: no2 = 7.443 + 0.4050/λ2 + 0.0186/λ4 + 0.0061/λ6 + 3.1485 λ2/(λ2 - 2194); ne2 = 5.76 + 0.3879/λ2 - 0.2288/λ4 + 0.1223/λ6 + 1.8550 λ2/(λ2 - 1780)
• Moh'sHardness: ≈ 0