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Yb:YAP crystal

POC-OC-122454-Yb:YAP crystal

  • Biaxial orthorhombic crystal with high thermal conductivity.
  • High absorption cross-section dependent on crystallographic orientation.
  • Wide absorption bandwidth near 978 nm.
  • Low quantum defect, supporting high-efficiency applications.
  • Custom crystals available upon request.

Customizable Components Available for This Material to Meet Your Specific Needs!

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Yb:YAP crystal Material General Description

Ytterbium-doped Yttrium Aluminum Perovskite (Yb:YAP crystal) is a biaxial orthorhombic crystal, exhibiting high anisotropic thermal expansion coefficients and birefringence. Unlike Yb:YAG, Yb:YAP provide superior absorption cross-sections, which are highly dependent on their crystallographic orientation. This material is renowned for its excellent thermal conductivity and high optical efficiency, making it suitable for high-power laser applications. Yb:YAP  are polarized, with emission and absorption cross-sections optimized based on crystal orientation. These properties make them an excellent choice for femtosecond and mode-locked thin-disk laser systems。

Yb:YAP crystal General Applications and Examples

Yb:YAP crystals are utilized in a wide range of laser applications:

  • High-Power CW Lasers: Due to their superior thermal conductivity and wide absorption spectrum, Yb:YAP  are suitable for continuous wave laser systems requiring efficient heat management.
  • Mode-Locked Thin-Disk Lasers: The polarization and absorption characteristics allow for the generation of ultrafast femtosecond pulses.
  • Medical and Industrial Applications: Their ability to handle high-power densities makes them ideal for cutting-edge medical lasers and industrial processes like material engraving or cutting.
  • Nonlinear Optical Applications: Yb:YAP are well-suited for generating second-harmonic or frequency-doubled laser outputs for various photonics applications.

Chemical and Structural Properties

Property

Value

Absorption Peak Wavelength

978 nm

Absorption Cross-Section

6.6 x 10^-20 cm^2

Absorption Bandwidth

4 nm

Laser Wavelength

1040 nm

Lifetime of Yb Energy Level

500 µs

Emission Cross-Section

0.5 x 10^-20 cm^2

Refractive Index (at 632.8 nm)

n_o = 1.7015, n_e = 1.7757

Density

5.35 g/cm^3

Mohs Hardness

8.5

Thermal Conductivity

11.7 W/m·K

dn/dT

7.7 x 10^-6 K^-1 (n_o), 4.8 x 10^-6 K^-1 (n_e)

Thermal Expansion Coefficient

2 x 10^-6 K^-1

Typical Doping Level

2-4%

Optical, Laser and Nonlinear Optical Properties

Parameter

Value

Absorption Peak Wavelength

978 nm

Emission Wavelength

1040 nm

Emission Cross-Section

0.5 x 10^-20 cm^2

Refractive Index

n_o = 1.7015, n_e = 1.7757

Thermal Conductivity

11.7 W/m·K

Lifetime

500 µs

Standard Fabrication Specifications

Specification

Value

Orientation

c-cut, a-cut available

Clear Aperture

>90%

Face Dimension Tolerance

±0.01 mm

Length Tolerance

±0.1 mm

Parallelism Error

<20 arcsec

Perpendicularity Error

<10 arcmin

Surface Flatness

λ/10 @ 632.8 nm

Surface Quality

20-10 Scratch/Dig

Protective Chamfers

<0.1 mm at 45°

Laser-Induced Damage Threshold (LIDT)

>10 J/cm^2 @1040 nm, 10 ns

Spectrum Transmission Curve:

The Yb:YAP crystal has a high absorption coefficient at 978 nm and emission at 1040 nm, as shown in the graph. This supports efficient pump absorption and high laser output.

Coating Specification:

 

  • Anti-Reflective Coatings: AR@978-1040 nm.
  • Reflectivity: R < 0.25% on both surfaces.
  • Additional coatings can be customized upon request.
  • Adhesion Test Compliant with MIL-C-675C military standards, an adhesion test involved applying a tape that meets LT-90 specifications onto the lens film layer. The tape was affixed fully and then removed vertically. This procedure was performed three times, resulting in no blistering or peeling.
  • Temperature Test In line with MIL-C-675C specifications, test pieces were subjected to temperatures of -62±1℃ and 71±1℃. After maintaining them at room temperature (16℃~32℃) for two hours, the adhesion test was repeated, confirming no film detachment.
  • Abrasion Resistance Test Conforming to MIL-C-675C and CCC-C-440 standards, the abrasion resistance test involved a gauze tester applying a minimum force of 1.0 lbs (0.45 kg) to the film. This was repeated 25 times with gauze widths of 1/4 inch (6.4mm) and 3/8 inch (9.5mm), ensuring no damage occurred to the film surface.
  • Humidity Test Under MIL-C-675C criteria, the test piece was placed in a controlled temperature and humidity chamber set to 49 ±2℃ and 95%~100% humidity for 24 hours. The film remained intact, with no peeling, scratches, or other defects.
  • Solvent and Cleaning Testing Following MIL-C-675C specifications, test pieces were exposed to room temperature conditions (16℃~32℃) and tested with acetone and alcohol for at least 10 minutes each. After air drying and subsequent cleaning with a cotton cloth soaked in alcohol, the film surface showed no signs of peeling or scratches.
  • Salt Spray Test After 100 hours in a 35°C environment with a 5% saltwater concentration, the film showed no signs of damage.

POC Strength and Capabilities

 

Photonics On Crystals (POC) specializes in the manufacturing and customization of advanced laser crystals. POC is committed to providing:

  • High-quality laser crystals with optimized optical and thermal properties.
  • Advanced fabrication capabilities to meet stringent customer requirements.
  • Comprehensive technical support for tailored applications.
  • Custom coatings and orientation specifications upon request.

Standard Products

Face Dimensions

Length

End Faces

Orientation

Doping

Coatings

SKU

Price (USD)

3 x 3 mm

2 mm

Right-angle cut

c-cut

10%

AR@AR@960-1060 nm

12826

Request

3 x 3 mm

2 mm

Brewster-angle cut

c-cut

10%

Uncoated

12827

Request

3 x 3 mm

2 mm

Right-angle cut

θ = 31°, φ = 0°

10%

AR@AR@960-1060 nm

12828

Request

Customization

Upon Request

Available

Available

Custom

Available

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POC-OC-122454-Yb YAP crystal

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