Nonlinear crystal BBO (β-barium borate) has a wide range of applications in several fields, and here are its main applications:
Laser technology
- Laser frequency doubling: It is commonly used in the 2x, triple, quadruple, and 5x of Nd:YAG lasers, as well as the frequency doubling of dye lasers and titanium gemstone lasers, which can convert infrared lasers into visible or ultraviolet light, such as converting 1064nm lasers into 532nm green light.
- Electro-optical Q-switch: The electro-optical Q-switch is suitable for high-repetition frequency, high-power electro-optical Q-switched lasers, and the switching and modulation of the laser is realized by controlling the polarization state of light in the all-solid-state picosecond and femtosecond regenerative amplification system.
- Optical Parametric Oscillators and Amplifiers: Also widely used in optical parametric oscillation (OPO) and optical parametric amplification (OPA), they can produce tunable laser outputs and extend the wavelength range of lasers.
- Ultrafast optics: Due to its wide phase matching range and high nonlinearity, it is conducive to efficient generation of ultra-short pulses, suitable for applications such as ultrafast spectroscopy and laser surgery.
Quantum optics
- It can be used to generate entangled photon pairs and multiphoton entanglement, providing a basis for fields such as quantum communication and quantum computing.
Defense technology
- Laser technology: used for laser frequency conversion to produce lasers of different colors, which can be used for target identification, missile guidance, etc.; It can also be used in the development of high-power lasers, producing high-intensity laser beams for missile defense, among other things.
- Electro-optical modulator: It is the core material of electro-optical modulator, which can quickly modulate the intensity, phase or polarization of light, and is used in radar systems, optical communication networks, etc., to improve the safety and efficiency of communication.
- Quantum cryptography: Used in quantum key distribution (QKD), by manipulating the characteristics of light to generate quantum states that can be used to securely transmit keys, ensuring the secure transmission of information.
Other areas
- Optical communication: Used for wavelength conversion of signals, optimizing multi-band transmission of optical fiber communication, and improving communication capacity and transmission efficiency.
- Scientific research: used in nonlinear spectroscopy to study the vibrational energy levels and optical properties of molecules; It is used in quantum optics to generate entangled photon pairs and study quantum state manipulation. Industrial processing: For example, 266nm laser can be used for material processing, with high precision and high-quality processing results.
- Medical field: 532nm laser can be used in the medical field, such as eye surgery, dermatological treatment, etc., with the advantages of small trauma and fast recovery.