CY2254 Holmium-Doped Yttrium Aluminum Garnet Crystal (Ho:YAG)

Catalog No. CY2254
Perpendicularity <5”
Refractive Incex@632nm 1.82
Laser Transition 5I7→5I8
Parallelism <10”

At SAM, we specialize in the growth and fabrication of high-temperature single-crystal and doped laser materials. Serving medical and scientific industrials for over 20 years, SAM provides high precision fabrication laser crystal products.

Related Products: Titanium-doped Sapphire Crystal (Ti:Sapphire), Ho:Cr:Tm:YAG, Neodimium-doped Yttrium Aluminum Garnet (Nd:YAG).

Description of Holmium-Doped Yttrium Aluminum Garnet Crystal

The radiation wavelength of Ho3+ ions is near 2100nm, which is located in the human eye safe band and has high transmittance in the atmosphere and has important application prospect in the fields of remote sensing detection, laser ranging, and laser radar, etc. Meanwhile, 2100nm locates in the absorption peak of the water molecule, which is highly absorbed by human tissues. When Ho laser is used for medical surgery, its penetration depth in the human body is only a few tens of micrometers, and it has little heat damage to the surrounding tissues of the human body. Therefore, it is widely used in medical surgery and treatment. Ho laser can also be used as a pump source, through the non-linear effect of the crystal (such as ZGP crystal), an infrared laser with a wavelength of 3 ~ 5 mm can be realized.

 

Specifications of Holmium-Doped Yttrium Aluminum Garnet Crystal

Material specifications

Concentration Tolerance (atm%)

0.2% ~3%(as per customers request)

Orientation

<111>crystalline direction

Parallelism

<10”

Perpendicularity

<5”

Surface Quality

10/5 Scratch/dig per MIL-O-1380A

Wavefront Distortion

λ/8per inch @633nm

Surface Flatness

λ/10@ 633 nm

Clear Aperture

>90

Thickness/Diameter Tolerance

Rods with diameter:(+0、-0.05)mm,( ±0.5) mm

Optical and spectral properties

Laser Transition

5I75I8

Laser Wavelength

2.05μm

Effective Stimulated Absorption Cross Section

1.09×10-20cm2

Effective Stimulated Emission Cross Section

1.14×10-20cm2

Pump Wavelength

1908 nm

Laser Wavelength

2090 nm

Fluorescence Lifetime

7 ms

Quantum Efficiency

1

Refractive Index @1.030 μm

1.82

Upper Conversion Loss Factor

1.8, 2.6, 5.3×10-18cm3/s

 

Applications of Holmium-Doped Yttrium Aluminum Garnet Crystal

- Medical
- Optical communication
- Remote sensing and radar
- Laser chemistry
- Laser spectrum
- Material processing,
- Laser ranging

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