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Universal Beam Splitters
The most useful device in any laser lab; the Universal Beam Splitter*. Variable transmission from 10% to 98%. Variable reflectivity from 90% to 2%.
- Constant 90 degree reflection
- Material: Fused Silica
- Clear aperture: 5mm
- Transmitted beam offset < 0.010mm
- Fits standard 1" diameter mirror mounts
- Nonpolarizing (S-P<2%)
- Adhesive Free
- Loss ≤ 1%
- * OK, not completely Universal, the light must be monochromatic and if the laser is pulsed then pulses cannot be shorter than 100 pico seconds in length.
Universal Beam Splitter FAQ
The Universal Beam Splitter mounts in a standard 1" diameter mirror mount. As the angle is adjusted, the transmission of the UBS varies from about 98% down to about 10% The beam is always reflected at 90 degrees and transmitted straight through regardless of the angle of the adjustment There are three versions of the Universal Beam Splitter. One is designed for visible light between 400nm and 900nm. Another is designed for the near infrared between 800nm and 1750nm. Universal Beam Splitters
Wavelength Range Reflectivity Transmission Clear Aperture Difference s vs p Detailed Drawing Price Buy Now Visible
400 to 900nm
Near IR
800nm to 1750nm
Beam Splitter Cubes
These cubes have very tight angle tolerances and can be used with external mirrors to make Michelson interferometers.
- Angle tolerances: 1 arc minute or better
- Material: Fused Silica
- Clear aperture: 85%
- Surface quality: 20/10 or better
- Surface figure: λ/10 or better
- Please contact us for any custom requirement
1/2" (12.7mm) Nonpolarizing Beam Splitter Cubes
Wavelength Range Coating Type R/T Difference s vs p Detailed Drawing Price Buy Now
1" (25.4mm) Nonpolarizing Beam Splitter Cubes
Wavelength Range Coating Type R/T Difference s vs p Assembly Method Detailed Drawing Price
Etalons - Air SpacedUltra-Stable Micro Etalons
The ultra-stable air spaced etalons are made completely (mirrors and spacer) from Zerodur, low expansion glass.
- Clear apertures: 2.0 mm
- Front Surface Figure: λ/100 or better
- Front Surface Figure: λ/20 or better
- Surface Quality: 10/5 or better
- Wedge: 30 minutes (to avoid reflections)
- AR coated: Less than 0.5%R
- Wavelength Range: 1400nm to 1600nm
- Dimensions: 4mm x 5mm x see table
- Please contact us for any custom requirement
FSR Detailed Drawing Buy Now Contact us with your specification for pricing Contact us with your specification for pricing Contact us with your specification for pricing Contact us with your specification for pricing
Piezo Tunable Etalons
Piezo tunable etalons are custom item, please call or email us to discuss your specific requirements
- Wavelength Range: λ = customer specified
- Clear aperture: 4mm
- Gap: specified by customer 50um to 8mm
- Gap adjustment: tunable from -4um to +12um (-30V to 150V)
- Maximum tuning speed: about 1KHz for large moves, about 10KHz for small movements (one FSR)
- Finesse: ƒ=customer specified
- Material (optical): Fused Silica
- Please contact us for any custom requirement
Coating Type Wavelength Range Size Finesse Detailed Drawing Buy Now
1 to 30
Solid Etalons are simple devices with a wide variety of applications in spectroscopy and lasers.
- Wedge: 0.1 arc second typical
- Clear aperture: 85% of outside dimension
- Surface quality: 10/5 or better
- Wavlength range: Visible
- Material: Fused Silica
- Coating: Uncoated
- Matched surface figure: λ/100
- Please contact us for any custom requirement
2mm x 4mm
Size FSR Finesse Detailed Drawing Price Buy Now
5mm x 5mm
Size FSR Finesse Detailed Drawing Price Buy Now
Solid Etalons are simple devices with a wide variety of applications in spectroscopy and lasers.
- Material: Fused Silica
- Wedge: 0.1 arc second typical
- Clear aperture: 85% of outside dimension
- Surface quality: 10/5 or better
- Matched surface figure: λ/100
- Diameter: 25.4mm
- Coating: 65%, 450nm to 650nm
- Thickness: see table
- Please contact us for any custom requirement
FSR Nominal Thickness Finesse Detailed Drawing Price Buy Now Thick Uncoated Silicon Etalons
Solid silicon etalons are interesting because the high index of silicon (3.4 depending on wavelength) creates a reasonably high finesse without any coatings. The temperature sensitivity of silicon can also be useful (or problematic).
- Material: Silicon
- Wavelength range: IR 1.2um to 6.3um
- Wedge < 5 arc seconds*
- Clear aperture: 85% of diameter for lengths < 1cm
- Clear aperture: 5mm for lengths > 1cm
- Surface quality: 10/5 or better
- Matched surface figure: λ/50
- Diameter: 25.4
- Finesse and FSR are dependant on the wavelength (see Refractive index for various materials)
- FSR shown is calculated for 1545nm
- Thickness: see table
- Please contact us for any custom requirement
- * If your etalons require coatings then we can use our fluid jet polishing system to reduce the wedge and increase the finesse
FSR Finesse Detailed Drawing Price
Solid silicon etalons are interesting because the high index of silicon (3.4 depending on wavelength) creates a reasonably high finesse without any coatings. The temperature sensitivity of silicon can also be useful (or problematic).
- Material: Silicon
- Wavelength range: IR 1.2um to 6.3um
- Wedge < 5 arc seconds*
- Clear aperture: 1/2" for thickness > 100um
- Clear aperture: 5mm for thicknesses < 100um
- Surface quality: 10/5 or better
- Matched surface figure: λ/50
- Mount Diameter: 25.4
- Finesse and FSR are dependant on the wavelength (see Refractive index for various materials)
- FSR shown is calculated for 1545nm
- Thickness: see table
- Please contact us for any custom requirement
- * If your etalons require coatings then we can us our fluid jet polishing system reduce the wedge and increase the finesse
FSR Finesse Detailed Drawing Price
Solid YAG etalons are also handy because the high index of YAG material (about 1.8 depending on wavelength). This creates a reasonably high finesse without any coating; this makes yagalons excellent for mode selection in high power solid state lasers. The additional advantage of YAG is excellent transmission in a wide range a wavelengths.
- Material: Undoped YAG
- Wavelength range: 250nm to 4um
- Wedge: Less than 1 arc second typical
- Clear aperture: 85% of outside dimension
- Surface quality: 10/5 or better
- Matched surface figure: λ/50
- Diameter: 5.0mm or 1/2"
- Finesse and FSR vary with wavelength, FSR below is based on an index of 1.82
- Thickness: see table, please contact us regarding custom sizes and thicknesses and specifications
DiameterFSR Finesse Detailed Drawing Price
DiameterFSR Finesse Detailed Drawing Price
These thin wafers are precision manufactured with excellent parallelism and flatness.
- Clear aperture: 85% of outside dimension
- Surface quality: 10/5 or better
- Thickness uniformity: available from .01um to 0.2um based on your requirements
Please contact us for pricing on wafers that meet your particular specifications
Pyrex Wafers
Diameter Thickness Part Number Buy Now Fused Silica Wafers
Diameter Thickness Part Number Buy Now BK-7 Wafers
Diameter Thickness Part Number Buy Now Silicon Wafers
Diameter Thickness Part Number Buy Now
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