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T/T Payment, Western Union1、What is a Polarizing Beamsplitter Cube?
A polarizing beamsplitter cube consists of two right angle prisms cemented together. The hypotenuse face of one prism is coated with a special multi layer dielectric coating. When circularly polarized or natural light enters the cube vertically, it separated into two linearly polarized beams. The transmitted beam is P-polarized while the reflected beam is S-polarized. And when a linearly polarized light comes in, it similarly divided into two beams. But the energy ratio of the two outgoing beams depends on the polarization of the incident beam. Polarizing beamsplitter cubes are available for many laser wavelengths and broadband ranges.
2、How does a polarizing beamsplitter Cube work?
Polarizing Beamsplitter is designed to split unpolarized light at a specific Reflection/Transmission (R/T) ratio with unspecified polarization tendencies.
Polarizing beamsplitters are designed to split light into reflected S-polarized and transmitted P-polarized beams.
3、What is a Polarizing beamsplitter Cube used for?
Beamsplitter is also a kind of filter, it is used to split or combine laser beam. However Polarization BeamSplitters are used to split or combine two perpendicular polarization laser beam. The performance of beam splitter depends on the coating specifications. They are common components in laser or illumination systems. Also ideal for fluorescence applications, optical interferometry, or life science or semiconductor instrumentation. Light can be split by percentage of overall intensity, wavelength, or polarization state.
To select a suitable beamsplitter, you need to consider the type, coating, transmission range and damage threshold.
|
Standard Wavelength(nm) |
488,514.5,532,632.8,635,670, 780,850,980, 1064,1300,1550 |
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| Size (mm) | 3.2x3.2x3.2 | 5x5x5 | 10x10x10 | 12.7x12.7x12.7 | 15x15x15 | 20x20x20 |
| Part NO. | UPBS032 | UPBS005 | UPBS010 | UPBS127 | UPBS015 | UPBS020 |
Hot Tags :
Visible and NIR Plate Beamsplitters
Broadband Polarizing Cube Beamsplitters
Non-Polarizing Cube Beamsplitters (NPBS)
Longpass Filters for Vision inspection Apllication
Longpass filters are ideal for a variety of applications, such as gas monitoring, temperature, sensing, thermal imaging and motion sensing, etc. Longpass filters block shorter wavelengths and transmit longer wavelengths. Blocking can be from reflectance, absorption or a combination. Transmission in the pass band can be enhanced with an antireflection coating on the second surface.
UN-TFA5020C
Product Features:
1. Compatible for 2/3'' Format Sensor
2. Ultra-compact Design
3. Ultra Low Distortion
4. High Relative Illumination
5. High Cost Performance
6. Supply with Focus and Iris locking screws.
Product information: Custom designs are available upon request.
Download the datasheet of UN-TFA5020C
UN-TFA1218C
Product Features:
1. Compatible for 2/3'' Format Sensor
2. Ultra-compact Design
3. Ultra Low Distortion
4. High Relative Illumination
5. High Cost Performance
6. Supply with Focus and Iris locking screws.
Product information: Custom designs are available upon request.
Download the datasheet of UN-TFA1218C
UV Fused Silica High-Precision window
BBAR Coated Hypotenuse Right Angle Prisms
AR Coated Sapphire Windows
N-BK7 metallic coated mirror
1、What Metallic Coated types can Uni-Optics supply?
Uni-Optics mainly offers four coating types, including:
1) UV Enhanced Aluminum : Ravg > 85% from 250nm to 400nm
2) Protected Aluminum: Ravg > 87% from 400nm to 800nm
3) Protected Silver: Ravg > 95% from 400nm to 20um
4) Protected Gold: Ravg > 98% from 650nm to 16um
2、What are the features of Metallic coated mirror?
Metallic coated mirror have many key features below:
Wide spectral range
Not sensitive to the incidence angle and polarization state
Low cost
Non-durable
Relatively low reflectance
Low laser damage threshold
3、What UNI Optics can do for you?
Common Specifications:
Substrate Materials: N-BK7, Fused silica, Pyrex；Float glass
Dimensional tolerance: +/-0.1mm
Surface quality: 60-40
Parallelism: 3’
Flatness: λ/4 per 25mm@633nm
Bevel: Protective
One surface: Polished and Metallic coating
The other surface: Fine ground
Note: Aluminum is the most widely used metal reflection film, from near UV to near IR, have high reflectivity, and with low cost. Silver has higher reflectivity in the visible and near infrared wavelength than the aluminum film, but the silver in the air will be rapid oxidation, color darkening, makes the film performance and firmness declined rapidly. Gold film has a good consistency with high reflectivity in the near, middle and far infrared range, can control the thermal radiation effectively, but it is relatively soft, easy bruising, and should be paid very close attention to clean, and the cost is very high.
Infrared Optics Material
1. Germanium (Ge)
Germanium (Ge) is the preferred lens and window material for high performance infrared imaging systems in the 8–12 μm wavelength band. 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.
| Crystallographic properties | |
| Syngony | Cubic |
| Crystal Form | Poly or Single Crystal |
| Lattice Constant | 5.66 |
| Cleavability | <111>, non-perfect |
| Molecular Weight | 72.6 |
| Physical properties | |
| Density, at 20 °C | 5.33 |
| Hardness, Mohs | 6.3 |
| Dielectric Constant for 9.37 × 109 Hz at 300 K | 16.6 |
| Melting | 937 |
| Thermal Conductivity, W/m·K at at 293 K | 59 |
| Thermal Expansion, 1/K at 298 K | 6.1 × 10-6 |
| Specific Heat Capacity, J/(kgK) at 273-373 K | 0.074 |
| Bandgap, eV | 0.67 |
| Knoop Hardness, kg/mm2 | 800 |
| Youngs Modulus, Gpa | 102.66 |
| Shear Modulus, GPa | 67.04 |
| Bulk Modulus, GPa | 77.86 |
| Debye Temperature, K | 370 |
| Poissons Ratio | 0.278 |
| Elastic Coefficient | C11=129, C12=48.3, C44=67.1 |
| Apparent Elastic Limit | 89.6 MPa (13000psi) |
| Chemical properties | |
| Solubility in water | None |
| Solubility in acids | Soluble |
| Molecular Weight | 72.59 |
2. 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. Optical silicon is generally lightly doped (5 to 40 ohm cm) for best transmission above 10 microns, and doping is usually boron (P-type) and phosphorus (N-type). After doping silicon has a further pass band: 30 to 100 microns which is effective only in very high resistivity uncompensated material.
CZ Silicon is commonly used as substrate material for infrared reflectors and windows in the 1.5-8 micron region. The strong absorption band at 9 microns makes it unsuitable for CO2 laser transmission applications, but it is frequently used for laser mirrors because of its high thermal conductivity and low density. Application as window, lens in the 1.5 - 8 um region; Mirror for CO2 laser and spectrometer applications.
Crystallographic properties
Syngony
Cubic
Lattice Constant, A
5.43
Physical properties
Density
2.33g/cm3
Hardness, Mohs
7
Dielectric Constant for 9.37 x 109 Hz
13
Melting point, оС
1414
Thermal Conductivity, W/m·K at 313 K
163
Thermal Expansion, 1/K at 293 K
2.6x10-6
Specific Heat Capacity, J/(kg°C)
712.8
Bandgap, eV
1.1
Knoop Hardness, kg/mm2
1100
Youngs Modulus, Gpa
130.91
Shear Modulus, GPan
79.92
Bulk Modulus, GPa
101.97
Debye Temperature, K
640
Poissons Ratio
0.28
Chemical properties
Solubility in water
None
Molecular Weight
28.09
3、ZnS material:
ZnS MultiSpectral Under intense heat and pressure, defects within the crystalline lattice are virtually eliminated, leaving a water-clear material with minimal scatter and high transmission characteristics from 0.4 to 12 microns. This material is particularly well suited for high-performance common aperture systems that must perform across a broad wavelength spectrum.
Specifications:
Material: ZnS MultiSpectral
Diameter Tolerance: --------------------- +0.0, -0.1mm
Thickness Tolerance: -------------------- ±0.1mm
Clear Aperture: ---------------------------->85%
Parallelism: -----------------------------------3 arc minute
Surface Quality: ----------------------------80-50 scratch and dig
Wavefront Distortion: -------------------- λ /2 per 25mm @633mm
Bevel: -----------------------------------------Protective (<0.2mm x 45° )
Coating: -------------------------------------- Optional （Uncoated, AR Coating, etc.）
4. ZnSe material
ZnSe is a preferred material for lenses, windows, output couplers and beam expanders for its low absorptivity at infrared wavelengths and its visible transmission. For high-power applications, it’s critical that the material bulk absorption and internal defect structure be carefully controlled, that minimum-damage polishing technology be employed, and the highest quality optical thin-film coatings are used. The material absorption is verified by CO2 laser vacuum calorimetry. Our quality assurance department provides testing and specific optics certification on request.
ZnSe is non-hygroscopic and chemically stable, unless treated with strong acids. It’s safe to use in most industrial field, and laboratory environments.
UN-ALS502K
Product Features:
· Developed for 32mm big frame sensor
· Large Aperture, upto F2.4
Tel : +86-591-86395085
Email : sales@uni-optics.com
