Alpha-BBO Crystals

Wide Spectral Region: Large birefringence from 189 nm to 3500 nm.

Exceptional Transmittance: Particularly in the UV region.

Superior Physical Properties: High optical transparency, surpassing optical homogeneity, low hygroscopicity, and high damage threshold.

Applications: Polarizers, Polarizing Beam Displacers, Phase Retarders, Birefringent Plates, Time Delay Compensators, High-Power and UV Applications, etc.

Alpha-BBO (α-BBO) is the high-temperature phase of BaB2O4 crystal. It is a negative uniaxial crystal recognized for its large birefringence over a wide spectral region from 189 nm to 3500 nm. While it shares many physical, chemical, thermal, and optical properties with beta-BBO, α-BBO does not exhibit nonlinear optical (NLO) properties due to its centrosymmetric structure. Therefore, it is not suitable for NLO applications such as second harmonic generation (SHG), where beta-BBO is recommended.

Specifications:

Material α-BBO
Size(mm) 1-40mm
Surface Quality 10/5 S/D
Optical Axis Orientation <6 arc min
Parallelism 10 arc sec
Flatness λ/4@633nm
Clear Aperture >90% of full aperture
Coating AR coating
Mount Upon customer’s requests

 

Key Features:

  • Wide Spectral Region: Large birefringence from 189 nm to 3500 nm.
  • Exceptional Transmittance: Particularly in the UV region.
  • Superior Physical Properties: High optical transparency, surpassing optical homogeneity, low hygroscopicity, and high damage threshold.

Applications:

  • Polarizers: For controlling the polarization of light.
  • Polarizing Beam Displacers: Used in various optical systems.
  • Phase Retarders: For changing the phase of light waves.
  • Birefringent Plates: Utilized in many optical devices.
  • Time Delay Compensators: For managing time delays in optical systems.
  • High-Power and UV Applications: Due to its excellent UV transmittance and physical robustness.

Kingwin Optics provides high-quality α-BBO crystals and custom optical components designed to deliver exceptional performance across a broad range of high-power and UV applications. For more information or to inquire about α-BBO crystals, please visit our website.