What is BBO crystal
The full name of BBO crystal is "Non-linear optical crystal material low-temperature phase barium metaborate" (β-BaB2O4). One of the housekeeping skills of BBO crystal is that it can double the frequency of laser light so that the wavelength of light becomes half, such as infrared The light changes to visible green light, and the efficiency is very high, so it has excellent application value (in addition to the excellent nonlinear effect, another outstanding optical characteristic of BBO is the electro-optic effect). This invention caused a huge sensation in the world material industry and was pushed to the forefront. BBO crystals are crystals with no center of symmetry.
The commercial application prospects of BBO crystals are limitless, and it is now recognized as one of the best second-order nonlinear optical crystals in the world. Its excellent optical properties and application fields mainly include:
A wide range of bands that can achieve phase matching (409.6-3500nm);
Wide transmission range (190-3500nm);
High frequency multiplication conversion efficiency (equivalent to 6 times of KDP crystal);
Good optical uniformity (δn≈10-6/cm);
High laser damage threshold, about 10GW/cm2 (100ps width, 1064nm);
Wide temperature acceptance angle (around 55°C).
Nd:YAG and Nd:YLF laser double, triple, quadruple and quintuple frequency;
Frequency double, triple frequency and frequency mixing of dye laser;
Ti: Sapphire and Alexandrite laser two, three, and four times the frequency;
Optical Parametric Amplifier (OPA) and Optical Parametric Oscillator (OPO);
Frequency doubling of argon ion, ruby and Cu vapor lasers;
In the field of research and development of high, precise and sharp laser technology such as all-solid-state tunable laser, ultra-fast pulse laser, deep ultraviolet laser.
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