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Excellent Cr 4+: YAG Passive Q-Switched Crystal Widely Used in 1μ M Neodymium and Ytterbium Lasers1
Laser Equipment, High Damage Threshold Laser Crystal, High Quality Surface Crystal
Shanghai Opticrystal Materials Co., Ltd.
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Product Description Cr 4+ :YAGCr 4+ :YAGcrystal is excellent passive Q-switched crystal widely used in 1μm neodymium and ytterbium lasers. It has the characteristics of high output efficiency of Q switch and suitable for repetitive frequency work. It has a high resistance to photodamage threshold, is more stable and durable than dyes and color center saturable absorbers, and can replace electro-optic Q switches to output high-power laser pulses in some cases.Chromium doped yttrium aluminum garnet (Cr 4+ : YAG) Cr: Y 3 Al 5 O 12 crystal It is suitable for Q switch, diode pumping, Nd:YAG, Nd:YLF, Nd:YVO 4 pumping lamps and others Lasers with a wavelength of 0.8~1.2um doped with Nd or Yb.Main features:High chemical stability and reliabilitylong lifeGood thermal conductivityHigh damage threshold (>500MW/cm 2 )Available as a high power, solid state and compact passive Q-switched switcheasy to operateMaterial properties: Crystal structureCubic systemLattice constant12.01 ?Melting point1970°CMoh's hardness8.5Density4.56g/ cm3 Specific heat0.59J/g.cm 3 @0-20oCCoefficient of thermal expansion[111] Direction: 7.8×10 -6 /K@0~250oCProduct parameters: Orientation<111>, <100>±5°Initial absorption coefficient0.5~6cm -1 @1064nmInitial transmittance5%~95% @1064nmComponent sizeDiameter: 3~20mm; Length*Width: 3×3~20×20mmDimensional toleranceDiameter: 0/-0.05mm, Length: ±0.5mmCylindrical processingfine grindingParallelism of end faces≤30"Flatness of end faceλ/8 @632.8nmSurface Quality20-10 (MIL-O-13830A)AR Coating Reflectance≤0.25% @1064nmCoating anti-laser damage threshold≥500MW/ cm2
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