LBO (Lithium Triborate, LiB₃O₅) is a premium nonlinear optical crystal widely used for frequency doubling, tripling, and optical parametric processes in solid-state and ultrafast laser systems. It is valued for its wide transparency range, high damage threshold, excellent thermal stability, and low hygroscopicity, making it one of the most reliable nonlinear crystals for high-power laser applications. LBO crystals are commonly used in Nd:YAG, Nd:YVO₄, Ti:Sapphire, fiber lasers, and other solid-state laser systems where long-term stability and high conversion efficiency are required. Key Features & Advantages Wide Transparency Range: ~160 nm – 2600 nm High Laser Damage Threshold: Suitable for high-peak-power and CW lasers Excellent Thermal Stability: Low thermal expansion and low walk-off Broad Phase-Matching Range: Supports SHG, THG, FHG, OPO, and OPA Low Hygroscopicity: Easier handling compared to BBO High Optical Homogeneity: Stable beam quality and conversion efficiency Typical Applications Second Harmonic Generation (SHG) Third & Fourth Harmonic Generation (THG / FHG) Optical Parametric Oscillators (OPO) Optical Parametric Amplifiers (OPA) High-power solid-state lasers Ultrafast and femtosecond laser systems Scientific research & industrial laser systems Standard Specifications Parameter Typical Value Chemical Formula LiB₃O₅ Crystal Structure Orthorhombic Transparency Range 160 – 2600 nm Nonlinear Coefficient (d_eff) ~0.85 pm/V Damage Threshold >10 GW/cm² (ns pulse) Hygroscopicity Low Operating Temperature Stable over wide range Custom specifications available upon request. Available Forms & Options Crystal Shapes: Rods, slabs, wafers, custom geometries Orientation: Type I / Type II phase-matching Surface Finish: Optical polish (λ/8 or better available) AR Coating: Optional (UV / VIS / IR wavelengths) Custom Sizes: Small R&D samples to large aperture crystals Quality & Custom Services High-purity crystal growth Precision orientation & cutting Optical-grade polishing Custom AR coatings Research-grade and production-grade options We support universities, research institutes, laser manufacturers, and industrial customers. Bulk orders and custom specifications are welcome. .product-faq { margin-top: 24px; } .product-faq h2 { font-size: 1.4rem; margin-bottom: 22px; } .product-faq details { border: 1px solid #e5e5e5; border-radius: 8px; margin-bottom: 12px; padding: 14px 18px; background: #fafafa; transition: background 0.2s ease; } .product-faq details[open] { background: #ffffff; } .product-faq summary { font-weight: 600; cursor: pointer; list-style: none; position: relative; padding-right: 28px; } .product-faq summary::after { content: "+"; position: absolute; right: 0; top: 0; font-size: 18px; font-weight: 600; } .product-faq details[open] summary::after { content: "–"; } .product-faq summary::-webkit-details-marker { display: none; } .product-faq .faq-content { margin-top: 12px; color: #555; line-height: 1.65; } Frequently Asked Questions — LBO Crystal What is an LBO laser crystal? LBO (Lithium Triborate, LiB₃O₅) is a nonlinear optical crystal widely used for frequency conversion processes such as SHG, THG, FHG, and optical parametric generation. It is known for its high damage threshold, wide transparency range, and excellent thermal stability. What wavelength range does LBO support? LBO crystals offer a broad transparency range from approximately 160 nm to 2600 nm, covering UV, visible, and near-infrared laser applications. How does LBO compare to BBO? Compared with BBO, LBO has lower hygroscopicity, better thermal stability, lower walk-off, and higher damage resistance, making it more suitable for high-power and long-term laser operation. Is LBO suitable for high-power or ultrafast lasers? Yes. LBO is widely used in high-peak-power, CW, and ultrafast laser systems due to its high laser damage threshold and excellent thermal properties. Do you offer custom orientations and sizes? Yes. We provide custom crystal sizes, phase-matching orientations (Type I / Type II), and geometries including rods, slabs, wafers, and special shapes based on your laser system requirements. Are AR coatings available? Optional anti-reflection (AR) coatings are available for UV, visible, and infrared wavelengths to maximize transmission and conversion efficiency.
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