Prodruct search£º
 
 
Nonlinear Optical crystal
Laser Materials
Substrates
Birefringent Crystals
Scintillators
Green and blue Laser Kit
Piezo-electric Crystal
optical lense
Yb:YAG is one of the most promising laser-active materials and more suitable for diode-pumping than the traditional Nd-doped systems. Compared with the commonly used Nd:YAG crystal , Yb:YAG crystal has a much larger absorption bandwidth to reduce thermal management requirements for diode lasers, a longer upper-laser level lifetime, three to four times lower thermal loading per unit pump power. Yb:YAG crystal at 1030nm is a good substitute for a Nd:YAG crystal at 1064nm and its second harmonic at 515nm may replace Ar-ion laser(with a large volume), which emit at 514nm.

Advantages of Yb:YAG Crystal
  • Very low fractional heating, less than11%
  • Very high slope efficiency
  • Broad absorption bands, about 8nm@940nm
  • No excited-state absorption or up-conversion
  • Conveniently pumped by reliable InGaAs diodes at 940nm(or 970nm)
  • High thermal conductivity and large mechanical strength
  • High optical quality

Material and Specifications

Dopant concentration

Yb: 5¡«15 at%

Wavefront Distortion

¡Ü 0.125¦Ë/inch

Extinction Ratio

¡Ý28 dB

Rod Sizes

Diameter:2¡«20mm,Length:5¡«150mm 
Upon request of customer

Dimensional Tolerances

Diameter:+0.00"/-0.002"mm,
 Length: ¡À 0.02" 

Barrel Finish

Ground Finish: 400# Grit

Parallelism

¡Ü10"

Perpendicularity

¡Ü5¡ä

Flatness

¦Ë/10

Surface Quality

10/5(MIL-PRF-13830B)

Chamfer

0.006"¡À0.002" at 45¡ã¡À 5¡ã

AR Coating Reflectivity

¡Ü 0.25% (@1030nm)

Single pass loss

<3¡Á103cm-1

Optical and Spectral Properties of Yb:YAG Crystal

Laser Transition

2F5/2¡ú2F7/2

Laser Wavelength

1030nm

Photon Energy

1.93¡Á10-19J(@1030nm)

Emission Linewidth

9nm

Emission Cross Section

2.0¡Á10-20cm2

Fluorescence Lifetime

1.2 ms

Diode Pump Band

940nm or 970nm

Pump Absorption Band Width

8 nm

Index of Refraction

1.82

Thermal Optical Coefficient

9¡Á10-6/¡æ

Loss Coefficient

0.003 cm-1

¡¾ close window¡¿
 
 
Copyright 2007 Shanghai LaserMa Crystal . Inc. ,All Rights Reserved