BBO Crystals

Barium β-borate (β-BBO) crystal is a high-performance nonlinear optical crystal known for its superior optical properties and wide range of applications. Its unique crystal structure and chemical composition give it excellent nonlinear optical coefficients, wide light transmission range, high damage threshold, and good temperature stability.

Specification:

Dimensional tolerances	（宽±0.1mm）x（高±0.1mm）
Transparent aperture	90% of center diameter
Crystal scattering	There is no visible scattering path or center under the inspection of the 50mW green laser
Smoothness	小于 λ/8 @ 633nm
Transmission wavefront distortion	小于 λ/8 @ 633nm
trough	≤0.2mmx45°
chip	≤ 0.1 mm
Surface	优于 10/5 S/D （MIL-PRF-13830B）
parallelism	≤20 arc seconds
vertical	≤5 arc minutes
Angular tolerances	≤0.25°
Quality warranty	One year of proper use
Installation	Diameter 1″ or customized

 

Key features:

• High nonlinear optical coefficient: In the NIR, visible, and ultraviolet spectra, the SHG coefficient is 3-6 times higher than that of ADP and KDP.
• Generalized light transmission: from 189nm to 3500nm, covering UV to far-infrared wavelengths.
• High Damage Threshold: Up to 15GW/cm² at 1064nm, 200% higher than KDP.
• Excellent temperature stability: Maintains optical properties over a wide temperature range.
• Excellent optical homogeneity: δN ≈ 10-6/cm, ensuring high quality light output.
• Availability of large single wafers: Meet the needs of large optical systems.

Application Ions:

• Harmonics:BBO crystals are widely used in nonlinear frequency conversion processes such as second harmonic generation (SHG), third harmonic generation (THG), fourth harmonic generation and fifth harmonic generation.
• Optical Parametric Oscillators (OPOs) and Amplifiers (OPAs):BBO crystals are ideal for optical parametric devices such as OPO and OPA, providing efficient and stable frequency conversion.
• Quantum optics: In the field of quantum optics, BBO crystals can be used to generate entangled photon pairs, ten-photon entanglement, and other quantum states, providing key components for quantum communication and quantum computing.
• Optoelectronic Applications:BBO crystals are also used in electro-optical modulators and other electro-optical devices, using their excellent electro-optical properties to achieve high-speed, high-precision optical signal control.
• High Power Laser System:Due to their high damage threshold and good thermal stability, BBO crystals are particularly suitable for high-power laser systems such as laser processing, medical lasers, and scientific lasers.

Gold & Silver Optics offers off-the-shelf custom BBO crystals for nonlinear optical applications. Their BBO crystals have high frequency conversion efficiency, a wide transmission spectrum, and a wide phase matching range. They also offer large single crystals and low thermo-optic coefficients, resulting in improved thermal stability. The crystals are grown using state-of-the-art manufacturing techniques, giving them a high degree of optical homogeneity. Coating options are available, including P-coating, multi-layer V-coating, and single- or dual-wavelength AR coating. Ultra-thin crystals with a thickness of 0.01 mm (with a fused silica substrate mounted) and 0.05 mm (free-standing) can be used for femtosecond line lasers. Shalom EO also offers BBO crystals for electro-optical (EO) modulation and offers high-precision polishing and Cr-Au electrodes.