KTP
Potassium Titanyl Phosphate (KTiOPO4 or KTP) is widely used in both commercial and military lasers including laboratory and medical systems, range-finders, lidars, optical communication and industrial systems.
HG’s KTP crystals are featured by:
l Large nonlinear optical coefficient
lWide angular bandwidth and small walk-off angle
lBroad temperature and spectral bandwidth
lHigh electro-optics coefficient and low dielectric constant
lNon-hygroscopic, chemically and mechanically stable
Basic properties of KTP:
u Application of KTP:
KTP is the most commonly used material for frequency doubling, frequency mixing and other Nd-doped lasers, particularly at medium and low power density. At present, extra-cavity and intra-cavity frequency doubling Nd: lasers using KTP are gradually taking the place of visible dye lasers and tunable Ti:sapphire lasers. KTP has become a preferred green light source for many industrial, commercial and medical applications.
l8w green output is available from 15w pumped 0.5% Nd:YVO4 and KTP lasers.
l 200w green output is generated from 1w diode pump by using HG’s 2x2x5mm KTP and 3x3x1mm 2%Nd: YVO4 crystal.
l2-5mw green output can be obtained from 180mw LD pumped Nd:YVO4 and KTP glued crystals.
u HG provides the following AR coating specifications:
lAR-(1064/532) nm. R <0.2% @1064nm and R <0.5%@ 532nm
lDamage threshold> 300MW/cm2 @ 1064,532 nm 0MW/cm2 @ 1064,532 nm
lBroadband AR coating
lHR1064nm & HT532nm, R> 99.8% @ 1064nm, T> 90% @ 532nm.
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Crystal Structure
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Orthorhombic, space group Pna21,point group mm2
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Lattice Parameter
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a=6.404?, b=10.616?, c=12.814?, Z=8
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Melting Point
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About 1172°C
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Mohs Hardness
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5
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Density
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3.01 g/cm3
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Thermal Conductivity
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13W/m/K
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Thermal Expansion Coefficient
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αx=11x10-6/°C, αy=9x10-6/°C, αz=0.6x10-6/°C
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