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    4. 福州高特光电科技有限公司

      Although Nd:YAG was invented in the Sixties last century, it has been and is still the most commonly used solid-state crystal material. Nd:YAG crystals are wildly used in all types of solid-state lasers systems-frequency-doubled continuous wave, high-energy Q-switched, and so forth.

      Its good fluorescent lifetime thermal conductivity and physical strengths makes it suitable for high power lamp pumped laser.

       

       

      1)
      Nd Dopant Concentration:
      0.5-1.2 atm%tolerance within 10% of concentration
      2)
      Diameter:
      3 ~ 14mm
      3)
      Length:
      1~ 160mm

      Typical Specification and Tolerance:

      1) 

      Orientation:
      <111> crystalline direction (+/-0.5℃)
      2)
      Wavefront Distortion:
      <l/10 at 632.8nm for 3 ~ 7mm
      <l/8 per inch at 632.8nm for >=7mm
      3)
      Surface Quality:
      better than 20/10 Scratch/Dig per MIL-O-1380A
      4)
      Parallelism:
      < 10 arc seconds
      5)
      Perpendicularity:
      < 5 arc minutes
      6)
      Surface Flatness:
      <l/10 at 632.8nm
      7)
      Clear Aperture:
      Central 90%
      8)
      Chamfer:
      0.15x45o
      9)
      Damage Threshold:
      > 15J/cm2(uncoated )
      > 700 MW/cm2(coated)
      10)
      Coatings:
      a)AR@1064nm, R<0.1%; (see coating 9-1)
      b)AR@1064nm, R< 0.1%;HT@808nm, T>95%;(see coating 6-2)
      c)HR@1064nm, R>99.8%; HT@808nm, T>95%;(see coating 9-2)
      d)HR@1064nm, R>99.8%; HT@808nm, T>95%; HR@532nm, R>99%;(see coating 9-3)
       

       

      To inquiry or order a finished Nd:YAG laser rod, please specify the specification listed above, for common application, we only need to know the main specification: Nd-dopant concentration, sizes, and coating. For special request, please specify specification in details for evaluation and fabrication.

      Physical and Optical Properties
      Chemical Formula Nd:Y3A15O12
      Crystal Structure Cubic
      Lattice Constants 12.01Ä
      Concentration ~ 1.2 x 1020 cm-3
      Melting Point 1970 °C
      Density 4.56 g/cm3
      Mohs Hardness 8.5
      Refractive Index 1.82
      Thermal Expansion Coefficient 7.8 x 10-6 /K [111], 0 - 250 °C
      Thermal Conductivity 14 W/m /K @20 °C, 10.5 W /m /K @100 °C.
           
       
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