Thin Film Polarizers-manufacture,factory,supplier from China

Thin Film Polarizers are made from composed materials which include a polarizing film, an inner protective film, a pressure-sensitive adhesive layer, and an outer protective film. Polarizer is used to change un-polarized beam into linear polarized beam.

Thin Film Polarizers are made from composed materials which include a polarizing film, an inner protective film, a pressure-sensitive adhesive layer, and an outer protective film. Polarizer is used to change un-polarized beam into linear polarized beam.

Thin film polarizers are based on interference within a dielectric optical thin-film coating on a thin glass substrate. They are made from composed materials which include a polarizing film, an inner protective film, a pressure-sensitive adhesive layer, and an outer protective film. Thin film polarizers are used for polarization separation, that's to say to change un-polarized beam into linear polarized beam.

Polarization optics is important for both intra and extra cavity use. By using high contrast thin film polarizers in their design, laser engineers can save weight and volume within the laser system without influencing the output. Compared with polarizing prisms, polarizers have larger incident angle and can be made with larger apertures. Compared with polarizers made from birefringent crystals, the advantage of thin film polarizers made from UVFS or N-BK7 is that they can be fabricated in very large sizes, therefore are particularly well suited for high laser powers and UV wavelengths.

Polarization is an important characteristic of light. Polarizers are key optical elements for controlling your polarization, transmitting a desired polarization state while reflecting, absorbing or deviating the rest. There is a wide variety of polarizer designs, each with its own advantages and disadvantages.

Polarizer is a kind of optical filter where the light transmission depends strongly on the polarization state. Normally, light with linear polarization in a certain direction is passed, and light polarized in an orthogonal direction is either absorbed or propagated to a different direction.For other directions of linear polarization with an angle θ against the“passing”direction, the transmission exhibits a cos2 θ dependence. That can be understood by considering that linear polarization state as a linear superposition of the "passing”and the“blocked”state.Most polarizers act

Front surface mirrors are coated with aluminum or dielectrics for maximum reflection. WISOPTIC provides both kinds of front surface mirrors: metal coated mirror and dielectric coated mirror.Dielectric mirror is an optical mirror made of thin layers of dielectric coating layers deposited on an optical substrate (UVFS or BK7).  Dielectric laser mirrors are used for laser lines, for narrowband or broadband wavelength ranges covering spectrum from UV to IR. Metallic mirrors are coated with protected gold, silver, or aluminum.

When classified by coatings, Optical Mirrors consist of dielectric mirrors and metallic mirrors. Dielectric mirror is an optical mirror made of thin layers of dielectric coating layers deposited on an optical substrate (UVFS or BK7). WISOPTIC offer dielectric laser mirrors for laser lines, for narrowband or broadband wavelength ranges covering spectrum from UV to IR. Metallic mirrors are coated with protected gold, silver, or aluminum. Metallic mirrors are widely used due to a moderate level of reflection over a very broad spectral range.

Cr:YAG  or Cr4+:YAG (Chromium doped Ytterium Aluminum Garnet, Cr:Y3Al5O12)  is an excellent  and widely used electro-optic material for passive Q-switching diode pumped or lamp-pumped Nd:YAG, Nd:YLF, Nd:YVO4 and other Nd or Yb doped lasers at wavelength 800~1200 nm. With advantages of chemical stability, durable, UV resistant, good thermal conductivity and high damage threshold (＞500 MW/cm2 ) and being easy to be operated, Cr:YAG is popularly used to substitute for many traditional materials such as LiF, organic dyes and color centers.

The most notable benefit of aspheric lenses is their ability to correct for spherical aberration, an optical effect which causes incident light rays to focus at different points when forming an image, creating a blur. Spherical aberration is commonly seen in spherical lenses, such as plano-convex or double-convex lens shapes, but aspheric lenses focus light to a small point, creating comparatively no blur and improving image quality.

WISOPTIC provides sorts of quadric Aspheric Lens and high order Aspheric Lens, as well as infrared Aspheric Lens (ZnS, ZnSe, Ge, etc. ).WISOPTIC Capabilities - Aspheric Lens Medium PrecisionHigh PrecisionAperture5~200 mm20~1000 mmSurface Quality [S/D]< 40/20 [S/D]< 40/20 [S/D]Surface IrregularityPV< 0.5~5 µm RMS< λ/50 @ 632.8 nmAspheric Surface Type  Quadric, High order Quadric, High order Manufacture Capability300 pcs/month20 pcs/year

Yb:YAG (Ytterbium-doped Yttrium Aluminum Garnet) is one of the most promising laser-active materials with a large absorption bandwidth and typical emission at 1030 nm. Yb:YAG is more suitable for high power diode-pumped lasers than the traditional Nd-doped systems. The broad absorption band enables Yb:YAG to maintain uninterrupted pump efficiency across the typical thermal shift of diode output.

WISOPTIC offers both plate and cube PBS for a variety of wavelength ranges and power handling requirements.

Polarizing Beamsplitters (PBS) splits incident unpolarized light into two perpendicular linearly polarized light. Among them, p-polarized light passes through completely, while s-polarized light is reflected at 45 deg which makes the emitting direction of s-light vertical to p-light. Additionally, beamsplitters can be used in reverse to combine two different beams into a single one. Beamsplitters are often classified according to their construction:cube or plate.Cube PBS are fabricated using two typically right angle prisms.

Highly doped (50%) Erbium YAG is a well-known laser source for producing 2940nm emission, commonly used in medical (e.g. cosmetic skin resurfacing), and dental (e.g. oral surgery) applications due to the strong water and hydroxapatite absorption at this wavelength.Low doped (< 1%) Erbium YAG hase been studied as an efficient means to generate high power and high energy 1.6 micron 'eye-safe' laser emission thru 2 level resonant pumping schemes.

A Pockels cell driver is a high-voltage regulated power supply, either pulse or continuous, allowing to control a birefringence of an electro-optical crystal (KTP, KD*P, BBO, etc.) in order to drive the polarization direction of the light propagating through the crystal.WISOPTIC has developed and produces a variety of Pockels cell drivers for different applications: from very simple compact devices for q-switching to precise and powerful fast models for pulse picking, cavity damping, regenerative amplifier control, etc.

Items Specifications Material CTH:YAG (Cr, Tm, Ho - doped YAG)Doping ExtentCr: 0.3~1.2 at%; Tm: 5~6 at%; Ho: 0.3~0.4 at% Crystalline Direction[111] (± 5°)DimensionsDia 3~6 (+0/-0.05) mm × 50~120 (±0.5) mm (customized)Extinction Ratio> 25 dBSingle Pass WFD < λ/8 @633 nm over central areaSurface Quality 10-5 [s-d] per MIL-O-13830BClear Aperture> 90% over central areaEnd-surface Parallelism< 20"Perpendicularity< 5'End-surface Flatness< λ/8 @633 nmChamfer0.2 ± 0.05 mm × 45°Laser CoatingAR/AR @ 209

Alumina Ceramic Reflectors are designed primarily for use in pumping chambers for many diverse laser systems, e.g. YAG lasers.

Ytterbium Doped Yttrium Aluminum Garnet (Yb:YAG) is more suitable for diode-pumping than the traditional Nd-doped laser crystal. Compared with the commonly used Nd:YAG, Yb:YAG has the following advantages: three to four times lower thermal loading per unit pump power and much larger absorption bandwidth to reduce thermal management requirements for diode lasers, longer upper-laser level lifetime.

Erbium doped Yttrium Aluminum Garnet (Er:Y3Al5O12 or Er:YAG) combine various output wavelength with the superior thermal and optical properties of YAG. The emission wavelength of Er:YAG with doping concentration of 50% is 2940nm, which is at the position of water absorption peak and can be strongly absorbed by water molecules. Therefore, Er:YAG laser is widely used in plastic surgery and dentistry.

Readily available stock of periodically poled MgO:LN crystals can be provided on short timescales to rapidly meet your application needs, providing the capability to efficiently generate laser light in a wide range of wavelengths.MgO:PPLN SHG crystals are available for a wide range of common pump laser wavelengths from 976 nm to 2100 nm, allowing generation of light between 488nm and 1050nm.MgO:PPLN OPO are available for 515nm and 1064nm pump sources, allowing continuous wavelength generation in a selection of ranges in the visible and IR.MgO: PPLN DFG Crystals are available for

BBO（Beta-Barium Borate, β-BaB2O4）based Pockels cells operate from approximately 0.2 - 1.65 µm and are not subject to tracking degradation. BBO exhibits low piezoelectric response, good thermal stability, and low absorption. Due to the low piezoelectric coupling coefficients of BBO, BBO Pockels cells function at repetition rates of hundreds of kilohertz.

The high damage threshold makes BBO cells more attractive than others in the high power systems. Like LiNbO3 Pockels cells, BBO Pockels cells work in transverse mode, which makes the cells very compact, and the half-wave voltage designable. BBO Pockels cells are also suitable for systems with high repetition rates.WISOPTIC has been granted of several patents for its technology of BBO Pockels cells. WISOPTIC’s mass products of BBO Pockels cell are gaining worldwide customers’ interest and trust for its high cost performance.

Nd:YVO4 is the most efficient laser crystal for diode-pumped solid-state lasers. The good physical, optical and mechanical properties make Nd:YVO4 an excellent material for high power, stable and cost-effective diode-pumped solid-state lasers.