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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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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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A prism, in optics, is a piece of glass or other transparent object surrounded by two planes that intersect
but are not parallel to each other. The most important parameters of a
prism are the angle and material. Prisms are capable to redirect light at a designated angle or adjust the orientation of an image. Therefore prism is useful for in certain spectroscopes, instruments for analyzing light
and for determining the identity and structure of materials that emit or
absorb light. An optical prism’s design determines how light interacts with it.
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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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Optical Prisms are widely used to redirect light at a designated angle. They are ideal for ray deviation, or for adjusting the orientation of an image. An optical prism’s design determines how light interacts with it. When light enters an optical prism, it either reflects off an individual surface or several surfaces before exiting, or is refracted as it travels through the substrate. WISOPTIC offers a wide range of optical prisms with various designs, substrates, or coatings.
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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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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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There are four main types of prisms based on the function: dispersion
prism, deflection or reflection prism, rotating prism and offset prism.
Deflection, offset and rotating prisms are commonly used in imaging
applications; diffusion prisms are designed for dispersive light sources
and are not suitable for any application that requires high quality
images.WISOPTIC offers a wide range of optical prisms with various designs, substrates, or coatings.
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KTP (KTiOPO4 ) is one of the most commonly used nonlinear optical materials which offers a range of unique features: high optical quality, broad transparency range, wide acceptance
angle, small walk-off angle, and type I and II non-critical
phase-matching (NCPM) in a wide wavelength range.
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KTP (KTiOPO4) is one of the most commonly used nonlinear optical materials. For example, it’s regularly used for frequency doubling of Nd:YAG lasers and other Nd-doped lasers, particularly at low or medium-power density. KTP is also widely used as OPO, EOM, optical wave-guide material, and in directional couplers.KTP exhibits a high optical quality, broad transparency range, wide acceptance angle, small walk-off angle, and type I and II non-critical phase-matching (NCPM) in a wide wavelength range.
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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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RTP possesses a large electro-optic impact for light propagating along either the x or y direction (electric powered along z). It functions right optical transparency from around 400nm to over 4µm. RTP offers a high resistance to optical damage with energy ~1Gw/cm2 for 1ns pulses at 1064nm. It is largely total lack of piezo-electric resonances at 200kHz and probable beyond. The primary distinction between RTP and BBO whilst used for Q-switching pertains to the common power degree at which the Q-switch is capable of be used practically.
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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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Polarizing Beamsplitters (PBS) are
designed to split light by polarization state rather than
by wavelength or intensity. PBS are often used in
semiconductor or photonics instrumentation to transmit p-polarized light
while reflecting s-polarized light. Optical isolators use PBS to eliminate feedback-induced damage. PBS are typically designed for 0° or 45° angle of incidence
with a 90° separation of the beams, depending on the configuration.WISOPTIC offers a wide variety of PBS in a
range of configurations including plate, cube, or lateral displacement.
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KTP Crystal Features• Large Nonlinear Optical (NLO) Coefficients• Wide Phase-matching Acceptance Angle• Broad Temperature and Spectral Bandwidth• High Electro-Optic (E-O) Coefficients
• Nonhygroscopic, Good Chemical and Mechanical Properties
• Relatively High Damage Threshold for E-O modulatorKTP Crystal Applications1. SHG of Nd:Laser - KTP is the most commonly used material for
frequency doubling of Nd:YAG and other Nd-doped lasers, particularly
when the power density is at a low or medium level.
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LBO (LiB3O5) is an excellent non-linear crystal of Borate-family following BBO. LBO has advantages of good ultraviolet transmittance (210-2300 nm), high laser damage threshold and large effective frequency doubling coefficient (about 3 times of KDP crystal). Therefore LBO is commonly used to produce high power second and third harmonic laser light, especially for ultraviolet lasers.LBO has large band gap and transparency region, high non-linear coupling, good chemical and mechanical properties.
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Nd:YAG (Neodimium Doped Yttrium Aluminum Garnet) has been and continue to be the most widely used laser crystal for solid-state lasers.
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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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One of the most important drawbacks of popular LiNbO3 crystal is its
susceptibility to photorefractive damage (optically induced change of
refractive index, usually under exposure with blue or green CW light).
The usual way to eliminate this effect is to keep LN crystals at
elevated temperatures (400K or more). Another way to prevent
photorefractive damage is MgO-doping (usually at levels of around 5 mol%
for congruent LN).
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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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Cr: YAG is an excellent crystal for passive Q-switching diode pumped or lamp-pumped Nd:YAG, Nd:YLF, Nd:YVO4 and other Nd or Yb doped lasers at wavelength from 800 nm to 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 used widely to substitute for many traditional materials such as LiF, organic Dye and color centers.
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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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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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Yb:YAG's advantage is a wide pump band and an excellent emission
cross section. It is ideal for diode pumping. The broad absorption band
enables Yb:YAG to maintain uninterrupted pump efficiency across the
typical thermal shift of diode output. High efficiency means a
relatively small dimension Yb:YAG laser crystal will produce high power
output. Based on the YAG host crystal, Yb:YAG can be quickly integrated
into the laser design process.
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