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    BBO CRYSTAL

    BBO Crystals (Beta-Barium Borate) from Raicol are renowned for their high optical homogeneity and extremely low bulk absorption from the IR to DUV range. With a high laser-induced damage threshold (LIDT) and minimal absorption, these crystals are the ideal choice for high-order harmonic conversions. Raicol’s in-house coating for BBO offers very high LIDT; its low absorption makes it ideal for high-power applications and high-order harmonic conversions. BBO phase matches over a wide range, yielding 2nd, 3rd, 4th, and 5th Harmonic generation and OPO from 190 to 1780 nm. BBO’s transparency up to 185nm makes it ideal for high power and DUV Pockels cells and modulators.

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    Overview

    Overview of BBO Crystals by Raicol

    BBO Crystals (Beta-Barium Borate) from Raicol offer exceptional optical homogeneity with extremely low bulk absorption across a wide spectral range, from IR to Deep UV. Their high laser-induced damage threshold (LIDT) and low absorption make them an ideal choice for high-order harmonic conversions.

    BBO crystals are widely used in 2nd, 3rd, 4th, and 5th harmonic generation as well as optical parametric oscillation (OPO), covering a wavelength range from 190 to 1780 nm. These versatile crystals provide high nonlinear coefficients, making them highly effective in nonlinear laser interactions.

    With the ability to phase-match over a broad range, BBO crystals enable efficient Second Harmonic Generation (SHG), Sum Frequency Generation (SFG), and OPO, making them indispensable for a variety of advanced laser applications.

    Key Features

    • Wide Transmission Range: BBO crystals offer a broad transmission region from 185 nm to 3500 nm, covering a wide range of optical applications.
    • Broad SHG Phase Matching: Capable of phase matching for Second Harmonic Generation (SHG) from 205 nm to 1300 nm, allowing for versatile harmonic generation.
    • High SHG Efficiency: BBO crystals have a large effective SHG coefficient, approximately 6 times higher than KDP crystals, making them highly efficient in nonlinear optical processes.
    • High Damage Threshold: BBO crystals possess a high laser damage threshold, making them suitable for high-power laser applications.
    • Optical Homogeneity: Excellent optical quality with optical homogeneity of δn ≤10⁻⁶/cm, ensuring minimal distortion in laser beams.
    • Wide Temperature Bandwidth: BBO crystals exhibit wide temperature tolerance, allowing stable performance in varying environmental conditions.

    Specifications

    • Aperture Size: Up to 25 x 25 mm.
    • Crystal Length: Up to 30 mm.
    • Flatness: Up to λ/10 @ 633 nm.
    • Perpendicularity: Up to 5 arc min.
    • Parallelism: Up to 5 arc sec.
    • Surface Quality (Scratch/Dig): 10/5.
    • AR Coatings: Available in AR/AR, DBAR, or dual-band with reflectivity R < 0.2%.
    • Absorption Coefficient:
      • < 50 ppm/cm-1 at 1064 nm.
      • < 100 ppm/cm-1 at 532 nm.
    • Wave front Distortion Control:  λ/8 at 633 nm.
    • Laser-Induced Damage Threshold :
      • 5 GW/cm² (10 ns pulses) at 1064 nm.
      • 1 GW/cm² (10 ns pulses) at 532 nm.

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