Laser optics and optical assemblies includes etalons, cubes, polarizers, waveplates, laser mirrors, micro-optics, bonded high-power laser optics, and IBS coatings.

Precision Photonics

Visible & NIR Optics

BBS broadband beamsplitter plates can be used to either split or combine a laser beam with a broad bandwidth or multiple beams in the same optical path within a specified wavelength range.

A durable all-dielectric multilayer coating design is used for neutral splitting of unpolarized visible or near-infrared light at a convient 90° angle.

• Broadband dielectric 45° beamsplitter
• Damage Threshold 100 mJ/cm2, 20 nsec, 20 Hz @ 1064 nm
• 50/50 laser splitting
• Low reflection BBAR coating on back surface (S2)
• For CW and low energy pulsed laser applications
• Wavelength Range: 458-529nm/488-694nm/650-1100nm/1200-1550nm
• Other beamsplitting ratios are available
• Other wavelengths and sizes are available

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Broadband Beamsplitters 458-1550nm - BBS

Continuously variable attenuation of linearly polarized light is achieved with a multiorder rotatable half-waveplate followed by a polarizing beamsplitter cube. The s-polarized light is reflected at 90° while p-polarized light is transmitted straight through the assembly.

Applications include:
• Variable laser sampling
• Holography
• Interferometry
• Light entanglement
• Variable ratio beamsplitting

• Available Wavelengths: 266-355-515-535-633-780-830-850-1030-1064-1550nm
• ABS standard cubes are cemented
• ABSO high powered cubes are optically contacted
• Damage Threshold:
• ABS: 1 J/cm2, 20 nsec, 20 Hz @ 1064 nm
• ABSO: 5 J/cm2, 20 nsec, 20 Hz @ 1064 nm
• Optical Material:
• ABS: Crystal quartz and BK7 glass
• ABSO: Crystal Quartz and Fused Silica

CVI Melles Griot

Continously Variable Beamsplitters - ABS

LWP Long Wave Pass Dichroic Beamsplitters exhibit high transmission for a long wavelength band, high damage thresholds, and high reflectivity for a shorter band of wavelengths.

Reflectivity bandwidth is limited by coating design, incidence angle and polarization.

• Fluorescence microscopy
• Optical parametric generation
• Customer-specified reflected and transmitted wavelengths
• Custom substrate diameters and thicknesses
• Damage Threshold:
• cw:1 MW/cm2 @ 1064 nm
• Pulsed: 10 J/cm2, 20 nsec, 20 Hz @ 1064 nm

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Long Wave pass Dichroic Beamsplitters LWP

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Broadband Dielectric Cube Beamsplitters BSD

PCBS Fixed Ratio Cube Beamsplitters provide a choice of split ratios at a variety of narrowband wavelengths for specific polarization states.
A durable all-dielectric partial reflection coating is used at the internal interface, and all external surfaces are anti-reflection coated for the wavelength specified.

For best spectral performance and transmitted wavefront, fixed ratio cube beamsplitters should be used with collimated or near-collimated input light.

The PCBS and other cemented beamsplitter cubes are easy to mount.

• Damage Threshold: 1 J/cm2, 20 nsec, 20 Hz @ 1064 nm
• Optical Material: BK7 glass
• Fewer ghost images than plate beamsplitter
• Choice of wavelength and split ratios
• Easy to handle and mount
• Equal optical path lengths

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Fixed Ratio Polarizing Cube Beamsplitters - PCBS

BS1 high energy beamsplitters are plate windows coated with an all-dielectric coating to separate laser light into your choice of R/T split ratios.
The BS1 high energy plate beamsplitters exhibit almost no absorption and are designed specifically for 45° at the wavelength and polarization of interest.

Ultrahard, high-damage-threshold coatings are available for all wavelengths from 193 nm to 2100 nm. Internally reflected ghost images are minimized by an antireflection coating on the rear surface.

• Each face is polished to flatness of λ/10 or better.
• Beamsplitters are ideal for beam separation or combination
• Damage Threshold:
• cw: 1 MW/cm2 @ 1064 nm
• Pulsed: 10 J/cm2, 20 nsec, 20 Hz @ 1064 nm
• Wavelength Range: 193nm to 2100nm

CVI Melles Griot

High Energy Plate Beamsplitter 193-2100nm - BS1

BSR Serie: High energy harmonic separators are used to reflect a lasers primary or harmonic wavelength while transmitting another. Our standard High Energy Harmonic Separators are designed for the Nd:YAG and Ti:Sapphire laser systems.

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High Energy Harmonic Separators - BSR

The UT ultra thin plate beamsplitters is an all-dielectric, non-absorbing plate beamsplitter on a fused silica substrate for high energy beamsplitting.
Use this beamsplitter when you need to minimize beam displacement

With greater than 10J/cm2 damage threshold, CVI's ultra thin plate beamsplitters are especially useful for high energy applications where cemented beamsplitter cubes may fail.
Plate beamsplitters are thinner and lighter than cube beamsplitters.
This may be required in some applications where there is not enough room for a cube.

• Minimizes displacement of transmitted beam
• Damage Threshold:
• cw: 1 MW/cm2 @ 1064 nm
• Pulsed: 10 J/cm2, 20 nsec, 20 Hz @ 1064 nm
• User specified reflectance from 1 percent to 99.5 percent
• User specified CWL from 244nm to 1550nm
• Standard 1.25" OD ring mount prevents breakage and fits easily into 1.25" lens or ring mount

CVI Melles Griot

High Energy Ultra Thin Beamsplitters - UT

The BSNP all dielectric 45 degree non-polarizing plate beamsplitters divide laser energy while preserving input polarization in reflected and transmitted beams. Choose from three aperture dimensions and a variety of laser wavelengths.

With 3J/cm2 damage threshold, CVI's nonpolarizing plate beamsplitters are especially useful for high energy applications where cemented beamsplitter cubes may fail.

Plate beamsplitters are thinner and lighter than cube beamsplitters.
This may be required in some applications where there is not enough room for a cube.

• 50% reflectance
• |Rs-RP|< 5%
• Damage threshold > 3 J/cm2
• Cement free
• Laser Line Wavelengths: 532nm-633nm-1064nm-1550nm

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Laser Line Non-polarizing Plate Beamsplitter -BSNP

Non-polarizing cube beamsplitters divide a single wavelength into nearly equal reflected and transmitted beams. The NCBS serie nonpolarizing coating reduces |Rs-Rp| and |Ts-Tp| from 35% to less than 5% for popular visible and near infrared laser wavelengths.

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Laser Line Non-Polarizing Cube Beamsplitter -NCBS

The OIO high energy optical isolator utilizes a multiple order waveplate (QWPM) and an optically contacted cube beamsplitter (PBSO), while the standard OI isolator uses a cemented beamsplitter cube (PBS).

This alternative to a Faraday isolator achieves passive isolation of linearly polarized light by combining a cube polarizer and a 1/4-waveplate.

• Passive isolation of linearly polarized light
• Custom isolators available for other wavelengths UV to NIR
• Isolation: 20dB or 35dB
• Clear Aperture: 6.35 and 12.7mm
• Damage Threshold:
• 20 dB OI: 1 J/cm2, 20 nsec, 20 Hz @ 1064 nm
• 20 dB OIO: 5 J/cm2, 20 nsec, 20 Hz @ 1064 nm
• 35 dB: 100 mJ/cm2, 20 nsec, 20 Hz @ 1064 nm
• Optical Material:
• OI: Crystal quartz and BK7
• OIO: Crystal quartz and Fused Silica

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Optical Isolators 248nm-1550nm - OI

PLB Pellicle beamsplitters is a high tensile strength elastic membrane, stretched like a drumhead over a black anodized flat metal frame, and bonded to the precision lapped edge.

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Pellicle Beamsplitters - PLB

Known as a leaky polarizing beamsplitter, the SBC Sampling Beamsplitter Cube is both a fixed ratio beamsplitter while also maintaining a controlled amount of P polarization to "leak through" into the reflected beam

• Optical disk testing
• Polarization sensitive beamsplitter cubes
• Four standard beamsplitting ratios available

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Sampling Beamsplitter Cubes - SBC