Products

CTH:YAG Crystals
Eye-safe wavelength of 2.1 μm
  • High slope efficiency
  • Excellent operation at room temperature
  • Pumping source options: flash lamp or laser diode
  • Ideal for medical lasers, laser cutting and welding, and scientific research applications. Inquire Us  
  • Specifications:

    Cr Concentration 0.85% Tm Concentration 5.90%
    Ho Concentration 0.36% Wavefront Distortion (Per inch of rod length) <I/2
    End Face Parallelism <10 arc seconds

     

    Physical and Optical Properties:

    Crystal Structure Cubic Lattice Parameters 12.01 Å
    Melting Point 1970℃ Moh Hardness 8.5
    Density 4.56g/cm3 Specific Heat (0-20) 0.59J/g.cm3
    Modulus of Elasticity 310GPa Poisson Ratio 0.3(est.)
    Tensile Strength 0.13~0.26GPa Thermal Expansion Coefficient [100]Direction:8.2x10-6 /°C(0~250℃)
    [110]Direction:7.7x10-6 /°C(0~250℃)
    [111]Direction:7.8x10-6 /°C(0~250℃)
    Thermal Conductivity 14W/m/K(@20℃)
    10.5W/m/K(@100℃)
    Thermal Optical Coefficient (dn/dT) 7.3x10-6 /C°
    Thermal Shock Resistance 790W/m Solubility Water: Insoluble;
    Common Acids: Slightly
    Laser Transition 5I7 - 5I8 Laser Wavelength 2.097μm
    Photon Energy 9.55 x 10-20 J Emission Cross Section 7 x 10-21 cm2
    Fluorescence Lifetime 8.5 ms Index of Refraction 1.80 @2.08μm
    Absorption Linewidth 4nm Pump Wavelength 781nm
    Major Pump Bands 400~800nm

    Cr:Tm:Ho:YAG, CTH:YAG is a kind of excellent laser crystal emitting at 2.1um wavelength. The addition of cerium as a dopant in the YAG crystal matrix enhances certain performance aspects. Due to its advantages including high slope efficiency, fitness for operation at room temperature, and output eye-safe wavelength laser light, CTH: YAG crystals find widespread applications in various laser systems, including solid-state lasers used in medical procedures (such as dermatology and ophthalmology), laser cutting and welding, and scientific research applications. Shanghai North Optics offers the CTH:YAG rods tailored upon customers' request.

    The Advantages of CTH: YAG 

    • High Thermal Conductivity: CTH: YAG crystals exhibit high thermal conductivity, which means they can dissipate heat effectively during laser operation. 
    • Wide Transparency Range: CTH: YAG crystals have a wide transparency range, allowing them to operate over a broad spectrum of wavelengths.
    • Excellent Optical Properties: These crystals possess excellent optical properties, such as high optical homogeneity and low scattering, which contribute to the quality of the laser beam.
    • Chemical and Mechanical Stability: CTH: YAG crystals are chemically and mechanically stable, making them durable and resistant to environmental factors. 
    • High Damage Threshold: These crystals typically have a high damage threshold, meaning they can withstand high-power laser radiation without significant damage. This is crucial for applications requiring intense laser beams.
    • Efficient Energy Conversion: CTH: YAG crystals are known for their efficient energy conversion, enabling the production of high-quality laser beams with minimal energy losses.

    Application Notes:

    • Surgery
    • Dentistry
    • Atmospheric Testing


    Laser Crystal Comparison Chart:

    laser crystal comparison