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    Nd:YLF
    Product Information :

     

    Nd:YLF is an excellent crystal for modelocked operation because it combines the characteristics of weak

    thermal lensing, large fluorescence line width and naturally polarized oscillation.

    Advantages of Nd:YLF Crystals
    High power, low beam divergence, efficient single mode operation
    High average power Q-switching at a moderate repetition rate
    Linear polarized resonators for Q-switching and frequency doubling
    Potential uniform mode for large diameter rods or slabs
    Stimulated emission cross section is favorable for low CW threshold
    Thermal lensing lower than that of YAG
    1053nm output of Nd:YLF matches gain curves of Nd:Glass and performs well as an oscillator and pre-amplifier for this host

    Specifications

    Dopant concentration

    Nd: ~1.0 at%

    Orientation

    [100] or [001] within 5°

    Wavefront distortion

    ≤0.25λ/inch @632.8nm

    Rod sizes

    Diameter 3~8mm, Length 10~120mm
    Upon request of customer

    Dimensional tolerances

    Diameter: +0.00/-0.05mm, Length: ± 0.5mm

    Barrel finish

    Ground or polished

    Parallelism

    ≤ 10"

    Perpendicularity

    ≤ 5′

    Flatness

    ≤ λ/10@632.8nm

    Surface quality

    10-5 (MIL-O-13830A)

    Chamfer

    0.15±0.05mm

    AR coating reflectivity

    ≤0.25%@1047/1053nm

    Optical and Spectral Properties

    Laser transition

    4F3/2→4I11/2

    Laser wavelength

    1047nm, 1053nm

    Emission cross section

    1.8×10-19cm2(E∥C) @1047nm
    1.2×10-19cm2(E⊥C) @1053nm

    Fluorescence lifetime

    485μs (1.0at%Nd)

    Index of refraction

    no=1.443 ne=1.464 @633nm
    no=1.448 ne=1.470 @1064nm

    Physical and Chemical Properties

    Crystal Structure

    Tetragonal

    Melting Point

    825℃

    Moh Hardness

    4-5

    Density

    3.95g/cm3

    Young's Modulus

    7.5×1011dynes cm-2

    Tensile Strength

    3.3×108dynes cm-2

    Thermal Expansion Coefficient

    [100]Direction:13×10-6/K

    [001]Direction:8×10-6/K

    Thermal Conductivity

    0.06W/cm/K





     
     
     
     
     


       
       
     
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