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Ho:Cr:Tm:YAG

Ho:Cr:Tm:YAG is a high efficient laser material which lases at 2.1 µm. It has wide applications in surgery, dentistry, atmospheric testing, etc.


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Advantages of Ho:Cr:Tm:YAG Crystal:

      •   High slope efficiency;  
      •   Pumped by flash lamp or diode; 
      •   Operates well at room temperature;  
      •   Operates in a relatively eye-safe wavelength range;

 

Optical and Spectral Properties of Ho:Cr:Tm:YAG Crystals:

 

Laser Transition

5 I 75 I 8

Laser Wavelength

2.097 µm

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 @2.08 µm                                   

Absorption Linewidth

4 nm

Diode Pump Band                       

781 nm

Major Pump Band

400~800 nm

 

 

Specifications of Ho:Cr:Tm:YAG crystal:

 

Doped Concentration

Ho:~0.35 at%, Tm:~5.8at%, Cr:~1.5at%                                

Wavefront Distortion

≤ 0.125λ/inch(@1064nm)

Extinction Ratio

≥25 dB

Rod Sizes

Diameter:3~6mm,Length:50~120mm 

Upon request of customer

Dimensional Tolerances

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

Barrel Finish                 

Ground finish: 400# Grit

Parallelism

≤30″

Perpendicularity

≤5′

Flatness

λ/10

Surface Quality

10/5

Chamfer

0.006″±0.002″ at 45°± 5°

AR Coating Reflectivity

≤ 0.25% (@2094nm)

 

 

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