NONLINEAR OPTICAL CRYSTALS
CLBO Nonlinear Optical Crystal
Cesium Lithium Borate (CsLiB₆O₁₀) nonlinear optical crystals for deep-UV frequency conversion, high-power harmonic generation and advanced laser applications.
CLBO crystal material supplied by Yueneng Optoelectronics.
TECHNICAL DATA
Material Properties & Optical Parameters
CLBO combines deep-ultraviolet transparency with favourable nonlinear optical characteristics, including broad acceptance ranges and relatively low walk-off, making it particularly suitable for advanced UV frequency-conversion systems.
Chemical Formula
CsLiB₆O₁₀
Crystal Structure
Tetragonal, Space Group I-42m
Lattice Parameters
a = b = 10.494 Å, c = 8.939 Å
Transparency Range
180–2750 nm
Melting Point
Approx. 844.5 °C
Temperature Acceptance
9.4 °C·cm
Angle Acceptance
1.02 mrad·cm @ 1064 nm / 0.49 mrad·cm @ 532 nm / 0.84 mrad·cm @ 488 nm
Spectral Acceptance
7.03 nm·cm @ 1064 nm / 0.13 nm·cm @ 532 nm / 0.09 nm·cm @ 488 nm
Walk-Off Angle
1.78° @ 1064 nm / 1.83° @ 532 nm / 0.98° @ 488 nm
Effective NLO Coefficient
0.95 pm/V @ 1064 nm / 1.01 pm/V @ 532 nm / 1.16 pm/V @ 488 nm
APPLICATIONS
Deep-UV Frequency Conversion & Laser Applications
Fourth Harmonic Generation
CLBO supports fourth-harmonic generation of Nd-doped laser systems and is well suited to 266 nm generation configurations.
Fifth Harmonic & Deep-UV Generation
CLBO can support fifth-harmonic generation and deep-UV wavelength conversion, including laser configurations operating around 213 nm.
High-Power UV Laser Systems
Its favourable acceptance characteristics and relatively small walk-off make CLBO suitable for demanding UV laser systems and advanced photonics applications.
MANUFACTURING CAPABILITY
CLBO Crystal Growth & Processing
Yueneng's nonlinear optical crystal manufacturing capabilities support CLBO crystal growth and subsequent processing for specialised UV laser and photonics applications. Crystal orientation, cutting, polishing and coating requirements can be coordinated according to specific optical system requirements.
Crystal growth process equipment at Yueneng's production facility.
PROCESSING CAPABILITY
Optical & Processing Specifications
CLBO crystals can be processed according to demanding nonlinear optical system requirements, with controlled surface quality, geometry and crystal orientation.
Dimensions, crystal orientation, coatings and processing requirements can be discussed according to the application.
Clear Aperture
Central 90%
Surface Quality
10/5 (Scratch/Dig), MIL-PRF-13830B
Flatness
≤ λ/6 @ 633 nm
Parallelism
20 arc sec
Perpendicularity
≤ 15 arc min
Angle Tolerance
Δθ ≤ 0.25°, ΔΦ ≤ 0.25°
Chamfer
≤ 0.2 mm × 45°
Chip
≤ 0.1 mm
HANDLING
CLBO Handling Considerations
CLBO is highly hygroscopic and should be used and stored in a dry, sealed environment. Appropriate handling and housing are important for maintaining crystal performance.
Maintain CLBO crystals in a controlled dry environment during storage, handling and system integration.
COATING OPTIONS
AR Coating Options
Dual-Band AR — 532 / 266 nm
- R < 0.2% @ 532 nm
- R < 1% @ 266 nm
Triple-Band AR — 1064 / 532 / 266 nm
- R < 1.5% @ 1064 nm
- R < 2% @ 532 nm
- R < 2% @ 266 nm
Deep-UV Triple-Band AR — 1064 / 266 / 213 nm
- R < 1.5% @ 1064 nm
- R < 2% @ 266 nm
- R < 2% @ 213 nm
Other coating requirements can be discussed according to wavelength and application requirements.