CY0501 Lithium Triborate Crystal (LBO Crystal, LiB3O5 Crystal)

Catalog No.	CY0501
Chemical Formula	LiB3O5
Density	2.47 g/cm3
Hardness	6 Mohs
Purity	99.9%

Lithium Triborate Crystal (LBO Crystal, LiB3O5 Crystal) is an excellent high-power ultraviolet frequency doubling crystal. Stanford Advanced Materials (SAM) offers high-quality Lithium Triborate Crystal with competitive pricing.

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Description

Specification

Lithium Triborate Crystal Description

Lithium Triborate Crystal (LBO Crystal, LiB3O5 Crystal) is an excellent high-power ultraviolet frequency doubling crystal. It has a wide transparency range, moderately high nonlinear coupling, high damage threshold, and desirable chemical and mechanical properties.

Lithium Triborate Crystal Specification

Flatness	λ/8 @ 633 nm
Parallelism	< 20 arcsec
Perpendicularity	< 5 arcmin
Angle tolerance	< 30 arcmin
Aperture tolerance	± 0.1 mm
Surface quality	10/5 scratch & dig per MIL-O-13830A
Clear aperture	90% of full aperture

Physical and Optical Properties

Chemical formula	LiB₃O₅
Crystal structure	orthorhombic, mm²
Optical symmetry	Negative biaxial
Space group	Pna2₁
Density	2.47 g/cm³
Mohs hardness	6
Optical homogeneity	∂n = 10^-6 cm^-1
Transparency region at “0” transmittance level	155 – 3200 nm
Linear absorption coefficient at 1064 nm	< 0.01 % cm^-1
Refractive indices: at 1064 nm at 532 nm at 355 nm	nx ny nz 1.5656 1.5905 1.6055 1.5785 1.6065 1.6212 1.5971 1.6275 1.6430
Sellmeier equations (λ, μm)	nx² = 2.4542 + 0.01125 / (λ² – 0.01135) – 0.01388 λ²
	ny² = 2.5390 + 0.01277 / (λ² – 0.01189) – 0.01849 λ² + 4.3025 × 10^-5λ⁴ - 2.9131 × 10^-5λ⁶
	nz² = 2.5865 + 0.01310 / (λ² – 0.01223) – 0.01862 λ² + 4.5778 × 10^-5λ⁴ - 3.2526 × 10^-5λ⁶
Phase matching range Type 1 SHG	554 – 2600 nm
Phase matching range Type 2 SHG	790 – 2150 nm
NCPM SHG temperature dependence: Type 1 range 950 – 1300 nm Type 1 range 1300 – 1800 nm Type 2 range 1100 – 1500 nm	T1 = - 1893.3λ⁴ + 8886.6λ³ – 13019.8λ² + 5401.5λ + 863.9 T2 = 878.1λ⁴ – 6954.5λ³ + 20734.2λ² – 26378λ + 12020 T3 = - 21630.6λ⁴ + 112251λ³ – 220460λ² + 194153λ – 64614.5
NCPM SHG at 1064 nm Type 1 temperature	149 °C
NCPM SHG at 1319 nm Type 2 temperature	43 °C
Walk-off angle	7 mrad (Type 1 SHG 1064 nm)
Thermal acceptance	6.4 K×cm (Type 1 SHG 1064 nm)
Angular acceptance	6.5 mrad×cm (Type 1 SHG 1064 nm) 248 mrad×cm (Type 1 NCPM SHG 1064 nm)
Nonlinearity coefficients at 1064nm:	d₃₁ = (1.05±0.09) pm/V d₃₂ = -(0.98±0.09) pm/V d₃₃ = (0.05±0.006) pm/V
Effective nonlinearity: XY plane YZ plane	d_ooe = d₃₂ cosφ d_oeo = d_eoo = d₃₁ cosθ
Expansion coefficients:	α_x = 10.8 × 10^-5K^-1 α_y = -8.8 × 10^-5K^-1 α_z = 3.4 × 10^-5K^-1

*For more optical information, please Contact us.

Lithium Triborate Crystal Applications

1. Frequency Doubling (Second-Harmonic Generation, SHG):

LBO crystals are frequently used for frequency doubling, where they convert an input laser beam of one wavelength into a laser beam of exactly half the wavelength.

2. Sum-Frequency Generation (SFG):

LBO crystals are employed in sum-frequency generation processes. By combining two input laser beams with different wavelengths, LBO can produce a new output wavelength that is the sum of the two input frequencies.

3. Optical Parametric Oscillators (OPOs) and Amplifiers (OPAs):

LBO crystals are crucial components in optical parametric oscillators and amplifiers. These devices allow for the generation of tunable laser output at various wavelengths, making them valuable in spectroscopy, material analysis, and scientific research.

4. Laser Systems:

LBO crystals can be integrated into various laser systems, including solid-state lasers, tunable laser sources, and mode-locked lasers. They are used in applications such as telecommunications, medical technology, and military laser systems.

5. Nonlinear Optical Studies:

Researchers use LBO crystals in nonlinear optical studies to investigate fundamental aspects of light-matter interactions, quantum optics, and quantum information processing.

6. Biomedical Imaging:

LBO crystals are used in multiphoton microscopy, a technique for high-resolution imaging of biological specimens. They enable deep tissue imaging with reduced photodamage, making them valuable in life sciences and medical research.

7. Remote Sensing:

LBO crystals can be employed in remote sensing applications, such as LIDAR (Light Detection and Ranging). They are used for environmental monitoring, atmospheric studies, and geological surveys.

8. Defense and Security:

LBO crystals find applications in military laser systems, laser rangefinders, target designators, and countermeasure systems for defense and security purposes.

9. Material Processing:

In industrial settings, LBO crystals are used in laser material processing applications, including laser cutting, welding, and marking. Their ability to generate high-energy laser beams at various wavelengths is valuable for precision material processing.

10. Scientific Research:

LBO crystals are used in various scientific experiments and research studies, particularly in the field of nonlinear optics. Their nonlinear properties enable researchers to explore and understand the behavior of light in new ways.

Lithium Triborate Crystal Packaging

Our Lithium Triborate Crystal is carefully handled during storage and transportation to preserve the quality of our product in its original condition.

Lithium Triborate Crystal FAQs

Q1 How does LBO compare to other nonlinear crystals like KTP or BBO?

LBO vs. KTP: LBO has a higher damage threshold and broader phase-matching range but lower nonlinear coefficients.
LBO vs. BBO: LBO offers better thermal and mechanical stability and is less hygroscopic, making it more robust for high-power laser systems.

Q2 What are the phase-matching properties of LBO Crystals?

LBO crystals support both:

Type I phase matching: Used for higher efficiency in SHG and THG.
Type II phase matching: Offers flexibility in wavelength tuning.

Q3 What is the operating temperature range of LBO Crystals?

LBO crystals have a wide operating temperature range, typically from -50°C to +200°C, making them suitable for applications requiring temperature stability.