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Yb:YAB Crystal

POC-OC-122453-Yb:YAB Crystal

  • Self-doubling laser crystal with nonlinear optical properties.
  • Excellent thermal conductivity and high mechanical strength.
  • Broad absorption bandwidth near 976 nm and strong emission cross-section.
  • Low quantum defect suitable for high-efficiency laser systems.
  • Customizable dimensions and coatings available upon request.

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

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Yb:YAB Crystal Material General Description

The Yb:YAB (Ytterbium-doped Yttrium Aluminum Borate) crystal is a versatile laser medium featuring self-doubling properties, combining both lasing and nonlinear optical functions. As a uniaxial negative crystal, it enables efficient frequency conversion from infrared to visible regions. Its high Yb doping concentration allows strong emission with minimal quenching, providing exceptional optical performance. Yb:YAB crystals are known for their robust mechanical strength, high thermal conductivity, and stable chemical properties, making them ideal for high-power and compact laser systems. These qualities make the Yb:YAB suitable for applications requiring strong nonlinear optical effects and reliable operation.

Yb:YAB Crystal General Applications and Examples

  1. High-Power Continuous-Wave (CW) Lasers: Yb:YAB serve as an effective medium for generating CW laser outputs, used in industrial processing, material cutting, and laser marking systems.
  2. Mode-Locked Femtosecond Lasers: The broad absorption bandwidth allows the production of ultrashort laser pulses, typically utilized in scientific research, spectroscopy, and optical imaging.
  3. Frequency Conversion Systems: As a self-doubling crystal, Yb:YAB is widely applied in frequency doubling and optical parametric oscillation (OPO) systems for applications like green and visible light generation.
  4. Medical Lasers: Yb:YAB crystals are employed in precision surgeries and dermatological treatments due to their reliable and consistent laser output.
  5. Scientific Instruments: With its nonlinear optical capabilities, Yb:YAB  is integral in advanced imaging techniques and research-grade laser systems.

Chemical and Structural Properties

Parameter

Specification

Crystal Structure

Trigonal

Chemical Formula

Yb:YAl3(BO3)4

Density

3.84 g/cm³

Mohs Hardness

7.5

Thermal Conductivity

6 W/m·K

Refractive Index at 632.8 nm

no = 1.7757, ne = 1.7015

Thermal Expansion Coefficient

2 × 10^-6 /K

Typical Doping Level

10 at.% Yb

Absorption Bandwidth at Peak

20 nm

Optical, Laser and Nonlinear Optical Properties

Parameter

Specification

Absorption Peak Wavelength

976 nm

Emission Wavelength

1040 nm

Emission Cross-Section

0.5 × 10^-20 cm²

Lifetime of Yb Energy Level

680 µs

Absorption Cross-Section

3.8 × 10^-20 cm²

dn/dT (Refractive Index Change w/Temp)

1.4 × 10^-6 /K

Standard Fabrication Specifications

Parameter

Specification

Orientation

c-cut

Face Dimension Tolerance

±0.01 mm

Length Tolerance

±0.1 mm

Parallelism Error

<20 arcsec

Perpendicularity Error

<10 arcmin

Protective Chamfers

<0.1 mm at 45°

Surface Flatness

λ/10 @ 632.8 nm

Laser-Induced Damage Threshold

>10 J/cm² @ 1040 nm, 10 ns

Spectrum Transmission Curve:

The Yb:YAB crystal exhibits peak absorption at 976 nm and emission at 1040 nm, as shown in the emission and absorption spectra above. Its broad absorption bandwidth allows for versatile pumping options, making it a preferred material for high-power applications.

Coating Specification:

 

  • Anti-Reflection Coatings:
    • AR@1030 nm and 1060 nm on both faces.
    • Optional coatings for specific applications, including AR@520-976-1040 nm.
  • 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) is renowned for producing high-quality laser crystals tailored to industry and scientific needs. With a focus on precision fabrication, strict quality control, and customization, POC delivers solutions optimized for cutting-edge technologies. Our Yb:YAB crystals represent our commitment to innovation and excellence in laser material manufacturing.

Standard Products

Face Dimensions

Length

End Faces

Orientation

Doping

Coatings

Price

3 x 3 mm

2 mm

Right-angle cut

c-cut

10%

AR/AR@960-1060 nm

Request

3 x 3 mm

2 mm

Brewster-angle cut

c-cut

10%

Uncoated

Request

3 x 3 mm

2 mm

Right-angle cut

θ = 31°, φ = 0°

10%

AR/AR@520-976-1040 nm

Request

POC-OC-122453-Yb YAB Crystal

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