ZGP Crystals, 15mm Length

Zinc germanium diphosphide (ZGP) crystals are considered state-of-the-art mid-infrared nonlinear crystals due to their unique properties. They exhibit excellent nonlinearity and thermal conductivity as well as relatively high laser-induced damage thresholds.

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Catalog Number

ACMA00027397

Product Name

ZGP Crystals, 15mm Length

Molecular Formula

ZnGeP2

Melting Point

1298 °C

Width

7 mm

Height

5 mm

Length

15 mm

DimensionTolerance

W±0.1mm/H±0.1mm/L±0.2mm

Theta(Θ)

54°

Phi(Φ)

0

Coating

AR @ 2.1µm+BBAR@3.5-5µm

Flatness

λ/4@632.8 nm

Parallelism

<30 arcsec

Perpendicularity

<10 arcmin

Surface Quality

60-40 S-D

ClearAperture

>80%

Crystal Structure

Tetragonal, 42m

Lattice Parameters

a = 5.465 Å, c = 10.708 Å

Optical Symmetry

Positive uniaxial (ne>no)

Density

4.162 g/cm³

Transparency Region

0.74 - 12 µm @“0“ transmittance level 12 µm @“0“ transmittance level

Refractive Indices

n(1.06 µm) no=3.2324, ne=3.2786 (5.3 µm) no=3.1141, ne=3.1524 ( 10.6 µm) no=3.0725, ne=3.1119

Walk Off Angle

0.57 deg at 5.3 µm

Expansion Coefficient

(Thermal expansion coefficient) 36 (||c) Wm-1K-1, 35 (⊥c) Wm-1K-1

Damage Threshold

60 MW/cm²@10.6 μm, 100 ns

Sellmeier Equations

no²=11.6413+0,69363/(λ²-0.21967)+1586.06/(λ²-832,75); ne²=12.1438+0,75255/(λ²-0.21913)+2061.68/(λ²-951.07)

Moh'sHardness

5.5

MSDS

COA

Spec Sheet

Features And Benefits

1. Useful transmission range from 2 µm to 12 µm 2. High nonlinearity 3. Relatively high damage threshold 4. Nominal absorption coefficient <0.04 cm-1 for o-wave at ~2.1 µm

Application

Due to its unique properties, ZnGeP2 (ZGP) optical nonlinear infrared crystals have attracted great interest in mid- and deep-infrared applications.

• Catalog Number: ACMA00027397
• Product Name: ZGP Crystals, 15mm Length
• Molecular Formula: ZnGeP2
• Melting Point: 1298 °C
• Width: 7 mm
• Height: 5 mm
• Length: 15 mm
• DimensionTolerance: W±0.1mm/H±0.1mm/L±0.2mm
• Theta(Θ): 54°
• Phi(Φ): 0
• Coating: AR @ 2.1µm+BBAR@3.5-5µm
• Flatness: λ/4@632.8 nm
• Parallelism: <30 arcsec
• Perpendicularity: <10 arcmin
• Surface Quality: 60-40 S-D
• ClearAperture: >80%
• Crystal Structure: Tetragonal, 42m
• Lattice Parameters: a = 5.465 Å, c = 10.708 Å
• Optical Symmetry: Positive uniaxial (ne>no)
• Density: 4.162 g/cm³
• Transparency Region: 0.74 - 12 µm @“0“ transmittance level 12 µm @“0“ transmittance level
• Refractive Indices: n(1.06 µm) no=3.2324, ne=3.2786 (5.3 µm) no=3.1141, ne=3.1524 ( 10.6 µm) no=3.0725, ne=3.1119
• Walk Off Angle: 0.57 deg at 5.3 µm
• Expansion Coefficient: (Thermal expansion coefficient) 36 (||c) Wm-1K-1, 35 (⊥c) Wm-1K-1
• Damage Threshold: 60 MW/cm²@10.6 μm, 100 ns
• Sellmeier Equations: no²=11.6413+0,69363/(λ²-0.21967)+1586.06/(λ²-832,75); ne²=12.1438+0,75255/(λ²-0.21913)+2061.68/(λ²-951.07)
• Moh'sHardness: 5.5