Good news for you: CRYSTECH Inc. have gotten the license of BIBO patent in USA from FEE LICENSE

Introduction
BIBO (BiB₃O₆) is a newly developed Nonlinear Optical Crystal. It has advanced characteristic for the NLO application

broad transparency range from 286nm to 2500nm;

high optical homogeneity (dn»10^-6/cm) and being free of inclusion;

large effective SHG coefficient (about 9 times that of KDP);

high damage threshold;

Wide temperature-bandwidth

Inertness with respect to moisture

Structural and Physical Properties

Optical properties

BIBO's applications

SHG for middle and high power Nd: lasers at 1064nm

SHG of high power Nd: lasers at 1342nm & 1319nm for red and blue laser

SHG for the Nd: Lasers at 914nm & 946nm for blue laser.

Optical Parametric Amplifiers (OPA) and Oscillators (OPO) application;

Over 2.8W cw 473nm blue output was achieved with type I BIBO for frequency doubling 4.6W cw Nd:YAG pumped by LD

Nonlinear Optical Properties Compare (SHG@946nm)

BIBO's Specification

Transmitting wavefront distortion: less than l/8 @ 633nm

Dimension tolerance: (W ± 0.1mm) x (H ± 0.1mm) x (L + 0.2mm/-0.1mm)

Flatness: l/8 @ 633nm

Scratch/Dig code: 10/5 to MIL-O-13830A

Parallelism: better than 20 arc seconds

Perpendicularity: 5 arc minutes

Angle tolerance: Dq < ± 0.3°, Df < ±0.3°

Quality Warranty Period: one year under proper use

Crystech Warrant:

Strict quality control;

High inside quality without any defection.

Large crystal size up to 20x20x40mm3

High damage AR-coating

Large quantity standard products in-stock

Fast delivery. (1-2 weeks ARO )

Standard  Products

Nd:YAG Produces 2.8 W of Blue Light

Researchers at the Institut für Laser Physik at Universität Hamburg in Germany have set a record for blue CW power generated from a diode-pumped solid-state laser, using a new nonlinear crystal, BiB 3 O 6 (BiBO), to frequency-double the 946-nm line of the Nd:YAG (Figure 1). The intracavity frequency-doubled laser produced up to 2.8 W of 473-nm light when it was pumped with 21 W of 808-nm radiation from a diode laser, an approach that may lead to more efficient, less expensive blue lasers in the commercial market.
Figure 1. Researchers at Universität Hamburg have set a record for the generation of blue light from a diode-pumped solid-state laser.    The 946-nm laser's mirrors had low reflectivity at 1064 nm to suppress the Nd:YAG's stronger line at that wavelength. The 946-nm transition terminates on the upper Stark-split branch of the ground state, which is approximately 0.7 percent populated at room temperature. This quasi-three-level behavior causes laser photons to be reabsorbed by the ground level in the unpumped regions of the laser rod. To prevent this reabsorption, the researchers matched the longitudinal pump beam very closely to the intracavity laser mode.
Figure 2. The laser produced 4.6 W of 946-nm radiation in the initial configuration (a). With an intracavity frequency-doubling crystal of LBO, BBO or BiBO (b), the setup yielded 1.5, 2.1 or 2.8 W of 473-nm light, respectively.    Type I phase-matching in nonlinear crystal requires that the laser be linearly polarized. But because thermal gradients in the laser rod are circularly symmetric, the rod's thermal birefringence is in polar coordinates. That is, the fast and slow axes have different orientations at different locations across the rod's cross section, so linearly polarized light passing through the rod becomes depolarized. This intracavity depolarization loss can seriously diminish the output power.
   Other researchers had shown that placing a quarter-wave plate between the laser rod and the back mirror will cause the worst parts of the depolarization to be reversed on a second passage through the rod. The Hamburg group borrowed this simple trick to boost its laser's output by more than 25 percent.
   In the arrangement used in the experiment, the laser produced 4.6 W of polarized 946-nm output in the configuration that included a 3.3 percent output coupler for that wavelength (Figure 2, a). When the output mirror was replaced with a high-reflection mirror for both the IR and blue wavelengths and a BiBO crystal was placed in the resonator (Figure 2, b), blue output of 2.8 W was obtained through the second curved folding mirror, which was highly transmissive at 473 nm.
   The group also experimented with two better-known nonlinear crystals in this second configuration. A 10-mm-long LiB 3 O 5 (LBO) crystal produced 1.5 W, and an 8-mm-long ß-BaB 2 O 4 (BBO) crystal produced 2.1 W. The 10.4-mm-long BiBO crystal produced the record-setter.