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Principles of photoacoustic imaging
Principles of photoacoustic imaging Photoacoustic Imaging (PAI) is a medical imaging technique that combines optics and acoustics to generate ultrasonic signals using the interaction of light with tissue to obtain high-resolution tissue images. It is widely used in biomedical fields, especially i...Read More -
Working principle of semiconductor laser
Working principle of semiconductor laser First of all, the parameter requirements for semiconductor lasers are introduced, mainly including the following aspects: 1. Photoelectric performance: including extinction ratio, dynamic linewidth and other parameters, these parameters directly affect the...Read More -
Application of semiconductor laser in medical field
Application of semiconductor laser in medical field Semiconductor laser is a kind of laser with semiconductor material as the gain medium, usually with natural cleavage plane as the resonator, relying on the jump between semiconductor energy bands to emit light. Therefore, it has the advantages o...Read More -
New high sensitivity photodetector
New high sensitivity photodetector Recently, a research team at the Chinese Academy of Sciences (CAS) based on polycrystalline gallium-rich Gallium oxide Materials (PGR-GaOX) proposed for the first time a new design strategy for high sensitivity and high response speed high photodetector through...Read More -
Quantum encrypted communication
Quantum encrypted communication Quantum secret communication, also known as quantum key distribution, is the only communication method that has been proven to be absolutely secure at the current human cognitive level. It’s function is to dynamically distribute the key between Alice and Bob ...Read More -
Optical signal detection hardware spectrometer
Optical signal detection hardware spectrometer A spectrometer is an optical instrument that separates polychromatic light into a spectrum. There are many types of spectrometers, in addition to the spectrometers used in the visible light band, there are infrared spectrometers and ultraviolet spect...Read More -
Application of quantum microwave photonics technology
Application of quantum microwave photonics technology Weak signal detection One of the most promising applications of quantum microwave photonics technology is the detection of extremely weak microwave/RF signals. By utilizing single photon detection, these systems are far more sensitive than tra...Read More -
Quantum microwave optical technology
Quantum microwave optical technology Microwave optical technology has become a powerful field, combining the advantages of optical and microwave technology in signal processing, communication, sensing and other aspects. However, conventional microwave photonic systems face some key limitat...Read More -
Brief introduction of laser modulator technology
Brief introduction of laser modulator technology Laser is a high-frequency electromagnetic wave, because of its good coherence, like traditional electromagnetic waves (such as used in radio and television), as a carrier wave to transmit information. The process of loading information onto the las...Read More -
The composition of optical communication devices
The composition of optical communication devices The communication system with the light wave as the signal and the Optical fiber as the transmission medium is called the Optical fiber communications system. The advantages of optical fiber communication compared with traditional cable communicati...Read More -
OFC2024 photodetectors
Today let’s take a look at OFC2024 photodetectors, which mainly include GeSi PD/APD, InP SOA-PD, and UTC-PD. 1. UCDAVIS realizes a weak resonant 1315.5nm non-symmetric Fabry-Perot photodetector with very small capacitance, estimated to be 0.08fF. When the bias is -1V (-2V), the dark current...Read More -
Type of photodetector device structure
Type of photodetector device structure Photodetector is a device that converts optical signal into electrical signal, its structure and variety, can be mainly divided into the following categories: (1) Photoconductive photodetector When photoconductive devices are exposed to light, the phot...Read More
