The 532nm green laser is widely used in fields such as laser display, biomedical imaging, fluorescence excitation, precision spectral analysis, holographic technology, and is currently one of the most commonly used visible light laser sources.
However, the 532nm frequency doubling scheme based on PPLN waveguide has long been limited by the optical birefringence effect of lithium niobate crystals: under short wavelength and high power conditions, changes in crystal refractive index lead to phase matching drift, output power fluctuations, and even irreversible degradation. Therefore, the stable output of 532nm PPLN waveguide has generally remained at the level of one hundred milliwatts before.
technological breakthrough
After continuous technological iteration, Hongchou Optoelectronics has now achieved 532nm PPLN waveguide 1W fiber coupling output and has the ability to deliver in bulk.
This upgrade has increased the threshold of photorefractive damage by more than an order of magnitude through MgO doping optimization, combined with waveguide structure optimization, precision temperature control, and efficient fiber coupling, systematically suppressing the photorefractive effect and ultimately achieving stable mass production.
Focusing on the research and development, production, and sales of lithium niobate series nonlinear optical devices, our core products include PPLN waveguides, PPLN crystals, and frequency conversion modules, covering wavelengths from ultraviolet to mid infrared. The company has the full process capability from crystal growth, polarization, waveguide preparation to packaging testing
OMeda (Shanghai Omedasemi Co.,Ltd) was founded in 2021 by 3 doctors with more than 10 years of experience in nanpfabrication. It currently has 15 employees and has rich experience in nanofabrication (coating, lithography, etching, two-photon printing, bonding) and other processes. We support nanofabrication of 4/6/8-inch wafers.
