Wafers and Substrates

SAW crystals and wafers, Film substrates for HTSC (high temperature super conductivity), Magnet and Ferroelectricity and semiconductor applications, crystal wafers and substrate for semiconductors and ceramic substrates are offered in Hangzhou Shalom EO. Besides the customized wafers or substrates for your special applications, a variety model of typical or standard wafers and substrates are available upon your choice in fast delivery and low cost.

A wafer, also called a slice or substrate, is a thin slice of semiconductor material, such as a crystalline silicon, used in electronics for the fabrication of integrated circuits and in photovoltaics for conventional, wafer-based solar cells. The wafer serves as the substrate for microelectronic devices built in and over the wafer and undergoes many microfabrication process steps such as doping or ion implantation, etching, deposition of various materials, and photolithographic patterning. Finally, the individual microcircuits are separated (dicing) and packaged.

Optical grade LiTaO3 wafers-Hangzhou Shalom

  • Quasi-phase matching for SHG and OPO
  • Pyroelectric Infrared Detectors
  • Optical fiber communications applications

Hangzhou Shalom EO offers the Optical grade LiTaO3 wafers/crystals/substrates and Optical grade LT wafers/crystals/substrtates, advanced facilities are equipped for crystals growing, wafer cutting, wafer lapping, wafer polishing and wafer checking.

Orientation Z-cut±0.2°
Diameter 76.2mm±0.3mm
Orientation Flat(OF) 22mm±2mm

Perpendicular to X±0.2°

Second Refer Flat(RF) 10mm±3mm

Cw270°±0.5°from OF

Cw315°±0.5°from OF

Thickness 500μm±5μm


Surface Double sides polished

S/D 20/10

TTV ≤10μm
WARP ≤50μm
Curie Temperature 605℃±0.7℃(DTA method)
Edge Beveling Edge rounding

Note, other type of customized LT wafers or substrates are available upon request.

Optical Windows

A variety of  optical windows are offered in Hangzhou Shalom EO:  circular windows, rectangular windows, wedged windows and elliptical windows, with dimensions range from Diam. 0.8mm to 300mm. We are able to process the large volume productions, and also deal with the small quanity of prototypes. A wide range of  optical crystals and optical glass materials substrates are available.


Materials BK7, B270, FS, BaF2, CaF2, MgF2,Quartz, YAG , Ge, Si, Sapphire, ZnSe, ZnS and other customized materials;
Spherical configurations circular windows, rectangular windows, wedged windows and elliptical windows
Size Tolerance +/-0.1mm
Thickness Tolerance +/-0.2mm or upon request
Surface quality(S/D) 40/20 or upon customer’s request to 10/5
Aperture 90% of central dimension
Flatness Lambda/4 @ 633nm or upon customer’s request to Lambda/10 @ 633nm

Note: The custom specifications are available upon customer’s request.

Infrared Optics >> Infrared Windows

IPL Filters and Waveguides-Filters

IPL is short for Intense Pulsed Light, IPL machines are used for a range of treatments as hair removal, skin rejuvenation, pigmentation removal, acne clearance and vascular therapy. Filters and waveguides are critical components in IPL machine, it blocks the harmful UV light sourcing from Xe lamps.

Hangzhou Shalom EO provides a variety of IPL filters and waveguides made from sapphire, fused silica and BK7, with various types of coating band. The available wavelength are: 430nm; 450nm; 480nm; 510nm; 530nm; 560nm; 580nm; 640nm; 690nm; 700nm; 750nm. Some standard types of the filtesr are in stocks at fast delivery, the customized filters are available upon  request

Achromatic Waveplates-Laser Component

Achromatic waveplate or retarders is made from two different substrate materials such as crystal quartz and magnesium fluoride. For the single material waveplates the working wavelength is very limited because of the dispersion of the material. While Achromatic Waveplate use two different kinds of material, the dispersions of the birefringence are also different. Hence such waveplate is not sensitive to the wavelength change.

Hangzhou Shalom EO offers the custom achromatic waveplates or retarders upon customer’s request, and the stocked modules are available in fast delivery and low cost.

Optical Lenses

Hangzhou Shalom EO offers a variety of optical lenses: plano-concave, plano-convex, convex- concave, double convex, double concave, cylindrical lenses, rod lenses and ball lenses. Dimensions range from 0.8mm to 300mm. We are able to process the large volume productions, and also deal with the small quantity for your prototypes. A wide range of optical crystals and optical glass materials substrates are available.