Import Beta-Barium Borate Crystal — Buy in wholesale FOB from Supplier in China

Beta-Barium Borate (BBO, BaB2O4) is a negative uniaxial nonlinear optical crystal prized for its broad transparency from approximately 190 nm to 3,500 nm and high damage threshold exceeding 10 GW/cm2 for nanosecond pulses. United Photonics Technology offers BBO in custom dimensions and cutting orientations for frequency conversion of solid-state lasers, including second-harmonic generation (SHG), third-harmonic generation (THG), and optical parametric amplification (OPA). The crystal combines a large nonlinear coefficient (d11 approximately 2.0 pm/V) with wide temperature-tuned and angle-tuned phase-matching ranges, enabling efficient conversion across visible and near-ultraviolet wavelengths that many alternative crystals cannot cover without absorption loss.

BBO is grown by high-temperature flux or melt techniques, polycrystalline precursor synthesis, with optical homogeneity typically specified at delta-n less than 1 x 10-5 per centimetre for premium laser-grade material. The crystal is hygroscopic and requires careful handling; surfaces are usually polished to 10-5 scratch-dig or better and may carry anti-reflection coatings at fundamental and harmonic wavelengths. United Photonics Technology states that OEM dimensions, custom axis-angle cutting, and coating specifications are available on request, indicating a build-to-order production model rather than extensive finished-goods inventory. Standard industry practice for BBO includes mounting in temperature-controlled ovens or sealed cells for critical phase-matching stability, and the crystal is often paired with LBO or KTP in cascaded frequency-conversion chains.

Primary applications span scientific research lasers, industrial Nd:YAG and Nd:YVO4 harmonic conversion, Ti:sapphire pump systems, and ultraviolet laser sources for semiconductor inspection and medical instrumentation. Buyers are typically OEM laser manufacturers, university photonics laboratories, and defence contractors requiring ITAR or export-controlled supply chains. Trade for optical crystals from Chinese suppliers typically operates under EXW or FOB terms with specialised packaging (desiccated, shock-mounted) and air freight due to value density. Buyers should confirm crystal orientation accuracy (typically theta and phi angles to plus or minus 0.25 degrees), surface figure (lambda per 10 or better at 633 nm), and coating damage threshold before finalising specifications.

United Photonics Technology is located at 2nd Floor, Building 6, No. 26 Changlong Middle Road, Tieling Industrial District, Minhou, Fuzhou, Fujian Province, China, postal code 350100. The company holds a Harbor trust tier, indicating basic verification on the platform. Its response rate is recorded at 0.00 percent with zero average response hours, suggesting that direct communication may be slow and that buyers should build extended lead times390 time into procurement schedules or engage through a representative with established contact.

The supplier's product description mixes BBO and LBO (Lithium Triborate) crystal specifications, which indicates technical familiarity with the nonlinear optical crystal family but also requires buyers to request discrete data sheets for each material. No information is provided about year of establishment, crystal growth capacity per month, quality-certification holdings (ISO 9001, ISO 14001), patent portfolio, or end-user reference list. The address in Fuzhou's Tieling Industrial District places it within Fujian's emerging optoelectronics manufacturing zone, though this does not guarantee in-house boule growth versus trading or finishing operations. Buyers should request a factory audit, crystal growth method disclosure, and batch test data including interferometric homogeneity maps and damage-threshold certification from an independent laboratory.