Beijing City, P.R.China — Laser Optex has developed ultra-thin crystalline material windows for IR, visible sensor and other wavebands from UV to MM wavelengths in a wide range of materials. Window sizes are from from 2.5 mm to 35 mm in diameter.

Materials and thickness limits include:
Barium Fluoride: (BaF2) 0.2 mm thick,
Calcium Gluoride (CaF2) 0.2 mm thick,
Cesium Iodide (CsI) 0.5 mm thick,
Silicon (Si ) 0.5 mm thick,
Zinc Selenide (ZnSe) 0.5 mm thick, and,
Sapphire (Al2O3) 0.3 mm thick.

(From the Laser Optex webpages):

Infrared IR optical windows include the following optical materials:

Infrared Grade Fused Quartz (SiO2) Windows
Infrared transmitting quartz polished optical windows and plates are used to transmit from 350nm to 3.50 microns in the infrared spectrum and are useful for their high temperature resistance and stability in demanding environments.

Optical Sapphire (random) (Al2O3) IR Windows
Sapphire polished windows and plates for infrared window applications transmit from the visible @750nm to the IR @ 5 microns. Sapphire is extremely hard and scratch resistant which is why it is a useful window in very hostile environments. It is used for its mechanical and infrared properties and is widely used as an (IR) infrared optical window.

Optical Silicon (Si) Windows
Silicon windows either floatzone or optical grade transmits in the infrared. Optical grade (monocrystaline or polycrystaline) silicon is mainly used for the 3-5 microns range. Floatzone silicon windows have higher transmission at 9 microns and 1% higher at 3-5 microns.

Optical Germanium IR (Ge) Windows
Germanium effective IR optical window operation ranges from 3-5 microns and 8-12 microns. Germanium is popular for its high refraction, strength and thermal conductivity, widely used in lasers and imaging systems.

Infrared Grade Calcium Fluoride (CaF2) Windows
Calcium Fluoride is good choice for optical windows in the 0.15 µm – 9 µm range. This material has found wide use in high power laser optics due to its low absorption. Polished surfaces are stable and will last several years under normal conditions. Due to its low refractive index, Calcium Fluoride can be used without anti-reflection coating.

Infrared Grade Barium Fluoride (BaF2) Windows
Barium Fluoride , its transmission range is 0.2 µm – 11 µm. Polishing is quicker than calcium fluoride using diamond pastes but is less easy to obtain free of sleeks. Barium fluoride is less resistant to attack by water than Calcium Fluoride. Pronounced water attack occurs at 500 °C, but the material can be used to 800 °C in a dry environment. The material is relatively hard but is highly sensitive to thermal shock.

Infrared Grade Zinc Selenide (ZnSe) Windows
Zinc Selenide is used for optical windows, lenses, mirrors and prisms particularly for infrared applications. The transmission range is 0.5 µm – 22 µm. Used for high power CO2-laser optics at 10.6 micronsZinc Selenide is produced by synthesis from zinc vapour and H2Se gas, forming as sheets on graphite susceptors. It is microcrystalline in structure, the grain size being controlled to produce maximum strength. Single crystal ZnSe is available, but is not common but has been reported as having lower absorption and thus more effective for CO2 optics.

About Laser Optex
Laser Optex Inc. is a specialized optics manufacturer which focuses on providing full of optical windows. We stock many standard optical windows in our stock.. You may find any type optical windows in our stock. They also specialize in custom design and fabrication, so we ensure deliver the products from prototype to OEM volume quantity in short time.

Laser Optex Inc.
Kang Ge Zhuang 150#,
Dongba, Chaoyang District,
Beijing City, P.R.China 100018

TEL : +86-10-88528312
FAX : +86-10-65493186
E-MAIL: info@laseroptex.com (for general information)
WEB : http://www.laseroptex.com