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A corner cube (or cube corner), also known as a retroreflector, is an optical
component with the unique ability to return an incoming beam of light
directly towards its point of origin regardless of the beam's angle of
entry. This property makes this prism type ideal for a wide variety of
applications, such as laser resonator cavities, land surveying, ground
based range-finding, satellite communications and space vehicle docking.Wisoptic offer a wide variety of retroreflectors at competitive prices and lead times, and are able to accommodate the most demanding requirements.
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Right angle prisms
are generally used to bend image paths or redirect light at 90°. This
produces a left handed image and depending on the orientation of the
prism, the image may be inverted or reverted.
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Wisoptic' standard and precision quality laser windows are fabricated from a variety of substrate
materials, e.g. UVFS
and N-BK7. They are available either with or without AR coatings, and with dia from 12.5 to 101.6 mm and thickness from 1 to 15 mm.
Also we offer uncoated rectangular windows with aperture from 15 x 20 to
50.8 x 50.8 mm and thickness from 2 to 10 mm.
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Optical beamsplitters play a vital role in many laser-based
measurement and positioning systems. Although the operation of a typical
beamsplitter is conceptually simple, its performance characteristics
can dramatically affect the accuracy and repeatability of the overall
system. Consequently, understanding the variables that distinguish
beamsplitter performance is an important step in comparing and
specifying components.
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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.
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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.
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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.
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BBO features good optical transparency from around 200nm to over 2µm, offers a high
resistance to optical damage with power handling >3GW/cm2 for 1ns pulses at 1064nm. It
is possible to use BBO Pockels cells at average power levels of
hundreds of watts and power densities of several kW/cm2. In addition, BBO Q-switches have very
low levels of piezo-electric resonances.
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A right angle prism is an optical prism designed to deviate light by 90° or 180°, depending on the orientation of the prism and the face through which light enters. The joining edges and faces are perpendicular to the base faces, and all joining faces are rectangular. They are often preferable to plane mirrors, because they are easier to mount and align.
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An aspherical lens features a non-spherical but rotationally symmetric
shape with a curvature radius that changes at various points between the
center and the edge. Although producing this type of lens is difficult,
when manufactured properly, it offers greater functionality than a
comparable spherical lens.Spherical Lenses vs. Aspherical LensesSpherical lenses have a spherical surface and the same radius of
curvature across the entire lens. In contrast, aspherical lenses have a
more complicated surface with a gradually changing curvature from center
to edge.
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Corner cube prisms are optics which act as corner reflectors.
The basic operation principle is that there are internal reflections on
three mutually orthogonal prism surfaces, producing a direction of a
reflected beam which is nominally parallel to the direction of the
incident beam – with the accuracy limited only by the accuracy of the
surface orientation of the prism.
Precision prisms can offer excellent parallelism of incoming and
reflecting beams.
It is usually specified as an angular deviation, e.g.
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Cr:YAG (Chromium doped Ytterium Aluminum Garnet, Cr:Y3Al5O12) crystal is an excellent material for passive Q-switching of Nd:YAG and other Nd or Yb doped lasers in the wavelength range of 0.8 to 1.2 μm. One of the remarkable features of Cr:YAG is its high damage threshold (500-1000 MW/cm2). Its absorption band extends from 800 nm to 1200 nm and peaks at around 1060nm with a very large absorption cross section.
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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.
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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
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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.
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Diffusion
Bonding Crystal consists of two, three or more parts
with different types. They are often used to decrease
thermal lens effect, that is conducive to the stability of lasers and
high-power laser operation.The Crystals being bonded could be a laser crystal doped
with laser-active ions, and its counterparts without dopants (e.g. YAG +
Nd :YAG).
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Compared with congruent LN (cLN) crysal, the electro-optic
coefficient, nonlinear optical coefficient, periodic polarization
reversal voltage and applied photorefractive properties of
stoichiometric LN (sLN) crystal are greatly improved. With such excellent
physical properties and wide application prospects, sLN crystal has rapidly become a competitive optoelectronic
material.sLN crystals are expected to be thermodynamically stable up to their melting temperature at 1170°C, while keeping a largerelectrical resistivity than cLN crystals by one order of magnitude at any temperature.
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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.
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Main SpecificationsDimensionsAperture2×2 ~ 14×14 mm2Length0.1 - 12 mmOrientation[100] or [111] (±1°)Doping Concentration0.5 ~ 3.0 mol%Initial Absorption Coefficient0.5 ~ 6.0 cm-1 @ 1064 nmInitial Transmission5% ~ 95% Surface Flatness< λ/8 @ 633 nmEnd Surface Parallelism< 30”Chamfer≤ 0.1 mm × 45°Surface Quality20-10 [s-d] (MIL-PRF-13830B)CoatingAR (R<0.2% @1064nm) or according to customer’s requestLIDT≥ 500 MW/cm2The pulse width of Cr4+:YAG passively Q-switched lasers could be as short as 5 ns for diode pumped Nd:YAG lasers and the repetition could be as high a
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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.
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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.
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The EO Q-switch (Pockels cell) is an electro-optic device in which the crystal
produces linear changes in the birefringence of the crystal (in contrast
to the Kerr Effect, which is quadratic with E).
Pockels cells are essential components in various optical devices such
as Q-switches for lasers, free space electro-optical modulators, free
space switches. WISOPTIC use highly deuterated DKDP (KD*P) crystal (D%>99%) to make high quality Q-switches with high laser induced damage threshold.
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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
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HGTR (high anti-grey track) KTP crystal developed by hydrothermal method overcomes the common phenomenon of electrochromism of the flux-grown KTP, thus has many advantages such as high electrical resistivity, low insertion loss, low half-wave voltage, high laser damage threshold, and wide transmission band.KTP Pockels cells made by HGTR-KTP crystal are mainly used in pulse lasers with narrow pulse width and high repetition frequency.
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