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CLBO Crystals

POC-OC-122405- CLBO Crystals

  • Exceptional UV nonlinear optical properties with a cut-off wavelength down to 180 nm.
  • High FOHG and FIHG conversion efficiencies for Nd:YAG lasers.
  • Wide acceptance angles with minimal walk-off, enhancing beam quality.
  • VUV output achievable at 193 nm using precise phase matching.
  • Durable and stable, suitable for high-power applications with no saturation.

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

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Cesium Lithium Borate (CsLiB₆O₁₀ or CLBO) is a cutting-edge nonlinear optical crystal, optimized for UV and deep UV applications. It is characterized by its excellent optical clarity, minimal absorption, and superior nonlinear optical efficiency. CLBO exhibits a larger temperature and spectral acceptance than other crystals, making it ideal for high-power laser systems and applications demanding precise harmonic generation. Its low hygroscopicity ensures stability under dry and sealed conditions. The crystal’s rapid growth cycle and scalable dimensions enable cost-effective manufacturing for industrial and research needs.

General Applications and Examples

CLBO crystals are extensively employed in various advanced photonics applications:

  1. High-Order Harmonic Generation:
    • Used for FOHG (Fourth Order Harmonic Generation) and FIHG (Fifth Order Harmonic Generation) in Nd:YAG lasers, enabling applications in microlithography and semiconductor manufacturing.
    • Example: Generating 193 nm deep UV for microprocessing applications.
  2. UV and Deep UV Lasers:
    • Applied in LiDAR systems, biomedical imaging, and UV spectroscopy.
    • Example: UV-LiDAR systems use CLBO for environmental monitoring and mapping.
  3. Microprocessing and Optical Communication:
    • Ideal for high-precision material processing and advanced optical fiber communication technologies.
    • Example: CLBO’s phase matching supports coherent UV light generation, critical for high-speed optical networks.
  4. Biomedical Research:
    • Suitable for UV imaging techniques and fluorescence-based diagnostics.
    • Example: CLBO crystal enables enhanced imaging resolution in molecular biology studies.
  5. Laser-Based Instrumentation:
    • Widely used in scientific setups requiring stable and efficient nonlinear optical conversion.
    • Example: CLBO crystals Facilitates efficient SHG and THG for pump lasers in OPO systems.

Chemical and Structural Properties

Property

Specification

Crystal Structure

Tetragonal, Space Group I42m

Lattice Parameters

a = 10.49 Å, c = 9.939 Å

Symmetry

Z = 4

Melting Point

Approx. 844.5 °C

Density

3.85 g/cm³

Thermal Expansion

αa = 4.8 × 10⁻⁵/K, αc = 2.69 × 10⁻⁵/K

Optical and Nonlinear Optical Properties

Property

Specification

Transparency Range

180–2750 nm

Angle Acceptance

1.02 mrad·cm (1064 nm)

Temperature Acceptance

9.4 °C·cm

Spectral Acceptance

7.03 nm·cm (1064 nm)

Walk-off Angle

1.78° (1064 nm)

Effective NLO Coefficients

d₃₃ = 1.16 pm/V (at 488 nm)

NLO Coefficients

d_ijk = d*sin(2θ)*sin²(φ)

Sellmeier Equations

n² = 2.2104 + 0.01018λ² – 0.01258λ⁻²

Standard Fabrication Specifications

Parameter

Specification

Dimension Tolerance

W ± 0.1 mm x H ± 0.1 mm x L ± 0.2 mm

Flatness

λ/8 @ 633 nm

Surface Quality

10-5 to MIL-PRF-13830B

Chamfer

0.2 mm ± 45°

Damage Threshold

>300 MW/cm² (266 nm, 10 Hz)

Spectrum Transmission Curve:

Available upon request.

Coating Specification:

Base Material

AR-Coating

Reflectance

CLBO

AR-532 nm/266 nm

R < 0.2% @ 532 nm

CLBO

AR-1064 nm/213 nm

R < 2% @ 213 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) leads the industry in advanced LBO crystal fabrication and customization. With a state-of-the-art manufacturing facility and a team of expert engineers, POC delivers products with precise quality control and rapid turnaround. Our capabilities include bespoke crystal dimensions, anti-reflective and DLC coatings, and system integration for a variety of applications. POC is dedicated to providing tailored solutions, meeting the demands of industries ranging from medical diagnostics to aerospace.

Standard Products

Dimension (mm)

Coating

Application

Price (USD)

Customization

5 × 5 × 0.5

AR-532/266 nm

FOHG/FIHG

$420

Available

10 × 10 × 1.0

AR-1064/213 nm

SHG/THG

$580

Available

POC-OC-122405-CLBO Crystal

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