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Potassium dihydrogen phosphate KH2PO4 (KDP) is a
transparent dielectric material best known for its nonlinear optical and
electro-optical properties. Because of its nonlinear
optical properties, it has been incorporated into various laser systems
for harmonic generation and optoelectrical switching.
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Characterized by the excelent UV transmission, high damage threshold,
and high birefringence, KDP (Potassium Dihydrogen Phosphate) are commonly used commercial NLO materials
for doubling, tripling and quadrupling of Nd:YAG laser at room
temperature or an elevated temperature. KDP are also excellent
electro-optic (EO) crystals with high EO coefficients, thus popularly
used as EO modulators and Pockels cells for Q-switched
lasers.
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KDP (KH2PO4 ) and DKDP/KD*P (KD2PO4 ) are among the most widely-used commercial NLO materials. With good UV transmission, high damage threshold, and high birefringence, these material are usually used for doubling, tripling and quadrupling of Nd:YAG laser. With high E-O coefficient, KDP and DKDP crystals are also widely used to make Pockels cells for laser system, such as Nd:YAG, Nd:YLF, Ti-Sapphire, Alexandrite, etc.
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Characterized by the excelent UV transmission, high damage threshold,
and high birefringence, KDP (Potassium Dihydrogen Phosphate) and KD*P
(Potassium Dideuterium Phosphate) are useful commercial NLO materials
for doubling, tripling and quadrupling of Nd:YAG laser at room
temperature or an elevated temperature. They are also excellent
electro-optic (EO) crystals with high electro-optic coefficients, widely
used as electro-optical modulators and Pockels cells for Q-switched
lasers.
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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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Potassium
Dihydrogen Phosphate (KDP) and Potassium Dideuterium Phosphate (DKDP)
are among the most widely-used commercial NLO materials, characterized
by good UV transmission, high damage threshold, and high birefringence,
though their NLO coefficients are relatively low. They are usually used
for doubling, tripling or quadrupling of a Nd:YAG laser (at constant
temperature).
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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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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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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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YLF is birefringent, which eliminates thermally induced depolarization
loss. The gain and the emission wavelength of Nd:YLF are polarization
dependent: there is the stronger 1047nm ray for π polarization, and a
weaker one at 1053nm for σ polarization. Nd:YLF provides alternative to the more common Nd:YAG laser crystal for near IR
operation.
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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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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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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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Potassium Dihydrogen Phosphate (KDP) and Potassium Dideuterium Phosphate (KD*P, DKDP) crystals are among the most widley used nonlinear crystals. Both of these crystals are routinely used for the doubling, triplingand quadrupling of Nd:YAG lasers at room temperatures.
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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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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.
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Beta-BBO crystal is an important nonlinear optical crystal
with combination of unique optical properties, such as broad transmission and
phase matching ranges, large nonlinear coefficient, high damage
threshold and excellent optical homogeneity. The β-BBO crystal is an efficient material for the second, third and fourth
harmonic generation of Nd:YAG lasers, and the best NLO material for the
fifth harmonic generation at 213 nm.
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Optical windows are made in the form of flat plates of a transparent medium that allow light into an instrument. Windows have high optical transmission with little distortion of the transmitted signal, but can not change the magnification of the system.
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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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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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LBO (LiB3O5) is a kind of non-linear optical crystal with good ultraviolet transmittance (210-2300 nm), high laser damage threshold and large effective frequency doubling coefficient (about 3 times of KDP crystal). So 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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LBO (LiB3O5) is a kind of non-linear optical crystal with good ultraviolet transmittance (210-2300 nm), high laser damage threshold and large effective frequency doubling coefficient (about 3 times of KDP crystal). So 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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The improved hydrothermal-grown KTP crystal overcomes the common
electrochromism damage of flux-grown KTP. The hydrothermal-grown KTP (HGTR-KTP, or GTR-KTP) has high damage
threshold, large effective electro-optic coefficients and lower
half-wave voltage. KTP EO Q-switches made by HGTR-KTP crystals utilize thermally compensated
double crystal designs. They are mainly used in pulse lasers with narrow pulse width and high repetition frequency.
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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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