¡¡
¡¡Products / Laser Crystals

Nd:YAG

 

Nd:YAG crystal has been and continue to be the most widely used laser crystal for solid-state crystal material. Its laser parameters are a good compromise between the strengths and weaknesses of its competition.  Nd:YAG crystals are used in all types of solid-state lasers systems-frequency-doubled continuous wave, high-energy Q-switched, and so forth. Compared with others laser crystals, its fluorescence lifetime is twice more than Nd:YVO4, and thermal conductivity is also better.
Hangzhou Lambda are able to stably supply quantity of Nd:YAG rods with high optical homogeneity, consistent performance,high processing accuracy and on time delivery.  
1.Main Specifications

 Dopant concentration:

 0.5~1.1 atm%

 Orientation:

 [111] within 5¡ã

 Wavefront Distortion:

 ¡ÜLambda/10@633nm

 Extinction Ratio:

 ¡Ý28 dB

 Rod Sizes:

 Diameter: 3~10mm
Length: 1~160mm

 Dimensional Tolerances:

 Diameter:+0.0mm/-0.05mm,
 Length: ¡À 0.5mm

 Parallelism:

 ¡Ü15" Arc Second

 Perpendicularity:

 ¡Ü5¡ä Arc Minute

 Flatness:

 ¡ÜLambda/10 @632.8nm

 Surface Quality:

 10/5 Scratch/Dig. (per MIL-O-13830A)

 Chamfer:
 <0.1 mm @ 45¡ã

 AR Coating Reflectivity:

 ¡Ü0.2% @1064nm

 
2. Physical and Optical Properties

 Laser Wavelength:

  1064nm

 Stimulated Emission Cross Section:

 2.8x10-19 cm-2

 Relaxation Time of Terminal Lasing Level:

 30 ns

 Radiative Lifetime:

 550 ms

 Spontaneous Fluorescence:
 230 ms
 Loss Coefficient:
 0.003 cm-1 @ 1064 nm
 Effective Emission Cross Section:
 2.8 x 10-19 cm2
 Linewidth:
 0.6 nm

 Index of Refraction:

 1.82

 Pump Wavelength:

 807.5nm

3.Physical and Chemical Properties

Chemical Formula:

 Nd:Y3A15O12

 Crystal Structure:

 Cubic

 Lattice Parameters:

 12.01Å

 Concentration:
  ~ 1.2 x 1020 cm-3

 Melting Point:

 1970¡æ

 Moh Hardness:

 8.5

 Density:

 4.56g/cm3

 Thermal Expansion Coefficient:

 [111]Direction:7.8¡Á10-6/¡æ(0~250¡æ)

 Thermal Conductivity:

 14W/m/K(@20¡æ) and 10.5W/m/K(@100¡æ)