Nonlinear LBO Crystal

For high performance infrared imaging systems Germanium(Ge)

Germanium (Ge) is the preferred lens and window material for high performance infrared imaging systems in the 8–12 μm wavelength bands.

Inquiry now
products Details

Its high refractive index makes Ge ideal for low power imaging systems because of minimum surface curvature. Chromatic aberration is small, often eliminating the need for correction. Germanium is most widely used for lenses and windows in IR systems operating in the 2μm-12μm range. Germanium is a high index material that is used to manufacture Attenuated Total Reflection (ATR) prisms for spectroscopy. Its refractive index is such that germanium makes an effective natural 50% beamsplitter without the need for coatings. It is also used extensively as a substrate for production of optical filters. Germanium covers the whole of the 8-14 μm thermal bands and is used in lens systems for thermal imaging. It can be AR coated with diamond producing an extremely tough front optic.


Physical and optial properties:

Crystal Type
Cubic
Lattice Parameter
a=5.657Å
Transmission Band
2-12μm
Mohs Hardness
6.3
Density
5.33g/cm3
Melting Point
937 ℃
Refractive Index
4.0032 at 10.6μm
Resistivity
5-40 ohm-cm
Young's Modulus
103 GPa
Thermal Expansion
6.1x10-6/℃
Thermal Conductivity
167mcal/cm/s/k

Specifications:

Material:
Ge
Dimension Tolerance:
+0.0/-0.1mm
Thickness Tolerance:
±0.1mm
Surface quality:
60/40
Clear Aperture:
>85%
Flatness:
λ/2@633nm
Parallelism:
3'



related Applications
FZ growth Silicon mirrors Infrared reflectors and windows' material Silicon (Si)
Infrared reflectors and windows' material Silicon (Si)
Silicon (Si) is grown by Czochralski pulling techniques (CZ) and contains some oxygen that causes an absorption band at 9 microns. To avoid this, material can be prepared by a Float-Zone (FZ) process.
Read More
Optical ZnS Windows Infrared optics CVD ZnS windows for full band of 0.4-12μm
Infrared optics CVD ZnS windows for full band of 0.4-12μm
ZnS is grown by chemical vapor deposition (CVD) method, for windows,domes and lenses for thermal-imaging system.
Read More
Zinc Selenide Windows Infrared applications ZnSe for IR lasers
Infrared applications ZnSe for IR lasers
ZnSe (Zinc Selenide) is the most popular material for infrared applications. It can transmit from 0.6 μm to 20 μm.
Read More
Sapphire crystal Superior infrared material sapphire crystal
Superior infrared material sapphire crystal
Sapphire is a superior optical material possesses excellent optical, chemical and physical properties.
Read More
Plano Concave Lenses Expand lights Plano-Concave Lenses
Expand lights Plano-Concave Lenses
Plano-concave Lenses have one concave surface. It has negative focal length. It is often used to expand light or to increase focal length in existing systems.
Read More
Double-Concave Lenses For diverging light Double-Concave Lenses
For diverging light Double-Concave Lenses
Double concave lens is the most common form of Negative lens. Negative lens is most suited to producing diverging light or a virtual image, where the input light is converging.
Read More
Glan Laser Polarizer For high power laser Glan Laser Polarizer
For high power laser Glan Laser Polarizer
Glan Laser Polarizer is designed specifically for high energy laser. It is made of two same birefringence material prisms that are assembled with an air space. The polarizer with two escape windows allows the rejected beam to escape out of the polarizer which makes it suitable for high power laser.
Read More
Yb:YAG Crystal promising laser-active materials Yb:YAG crystal
promising laser-active materials Yb:YAG crystal
Yb:YAG is one of the most promising laser-active materials and more suitable for diode-pumping than the traditional Nd-doped systems. Compared with the company used Nd:YAG crystal, Yb:YAG crystal has a much larger absorption bandwidth to reduce thermal management requirements for diode lasers, a longer upper-laser level lifetime, three to four times lower thermal loading per unit pump power.
Read More
Cr4:YAG Crystal For passively Q-switching diode pumped Cr4:YAG Crystal
For passively Q-switching diode pumped Cr4:YAG Crystal
Passive Q-switching is preferred for simplicity of manufacture and operation, low cost and reduced system size and weight. Cr4+:YAG is an excellent crystal for passively Q-switching diode pumped or lamp-pumped Nd:YAG, Nd:YLF, Yb:YAG or other Nd and Yb doped lasers at wavelength from 1.0 to 1.2um.
Read More
Fused Silica Windows Customized Photonics Fused Silica Windows
Customized Photonics Fused Silica Windows
Fused Silica Window is made from the material of fused silica. Fused Silica is a superior optical material possesses excellent optical, chemical and physical properties which is formed by chemical combination of silicon and oxygen.
Read More
Right Angle Prism Right Angle Prism as a mirror and a retroreflector
Right Angle Prism as a mirror and a retroreflector
Right Angle Prism is used as a mirror to deviate light through 90 degree, and also as a retroreflector to deflect light through 180 degree by total internal reflection.
Read More
Frequency doubling LBO Crystal Nonlinear laser frequency doubling second third harmonic generation lithium triborate SHG THG LBO Crystal
Nonlinear laser frequency doubling second third harmonic generation lithium triborate SHG THG LBO Crystal
LBO (Lithium triborate or LiB3O5) is a very useful nonlinear optical crystal material, especially for SHG  THG of high-intensity laser radiation, intracavity SHG THG, deep-UV SFG and OPO applications.
Read More
Send a Message
If you have questions or suggestions,please leave us a message,we will reply you as soon as we can!
Get In Touch
  • Tel : +86-591-22857792
  • Email : sales@100optics.com
  • Add : 3th Floor, Building 1, No 39 Jinlin Road, Cangshan District, Fuzhou Fujian,P.R.China.
Leave Message welcome to Hundreds Optics
If you have questions or suggestions,please leave us a message,we will reply you as soon as we can!

Home

Products

News

contact