-
Analysis of System Errors of Photodetector
Analysis of System Errors of Photodetector I. Introduction to the Influencing Factors of System Errors in Photodetector The specific considerations for systematic error include: 1. Component selection: photodiodes, operational amplifiers, resistors, capacitors, ADCs, power supply ics, and referen...Read More -
Optical path design of rectangular pulsed lasers
Optical path design of rectangular pulsed lasers Overview of Optical path design A passive mode-locked dual-wavelength dissipative soliton resonant thulium-doped fiber laser based on a nonlinear fiber ring mirror structure. 2. Optical path description The dual-wavelength dissipative soliton reson...Read More -
Introduce the bandwidth and rise time of the photodetector
Introduce the bandwidth and rise time of the photodetector The bandwidth and rise time (also known as response time) of a photodetector are key items in the testing of the optical detector. Many people have no idea about these two parameters. This article will specifically introduce the ba...Read More -
The latest research on dual-color semiconductor lasers
The latest research on dual-color semiconductor lasers Semiconductor disc lasers (SDL lasers), also known as vertical external cavity surface-emitting lasers (VECSEL), have attracted much attention in recent years. It combines the advantages of semiconductor gain and solid-state resonators...Read More -
How to reduce the noise of photodetectors
How to reduce the noise of photodetectors The noise of photodetectors mainly includes: current noise, thermal noise, shot noise, 1/f noise and wideband noise, etc. This classification is only a relatively rough one. This time, we will introduce more detailed noise characteristics and classificati...Read More -
High-power pulsed laser with all-fiber MOPA structure
High-power pulsed laser with all-fiber MOPA structure The main structural types of fiber lasers include single resonator, beam combination and master oscillating power amplifier (MOPA) structures. Among them, the MOPA structure has become one of the current research hotspots due to its abi...Read More -
The key items of photodetector testing
The key items of photodetector testing The bandwidth and rise time (also known as response time) of photodetectors, as key items in the testing of detectors, have currently attracted the attention of many optoelectronic researchers. However, the author has found that many people have no un...Read More -
Optical path design of polarized fiber narrow-linewidth laser
Optical path design of polarized fiber narrow-linewidth laser 1. Overview 1018 nm polarized fiber narrow-linewidth laser. The working wavelength is 1018 nm, the laser output power is 104 W, the spectral widths of 3 dB and 20 dB are ~21 GHz and ~72 GHz respectively, the polarization extinction rat...Read More -
All-fiber single-frequency DFB laser
All-fiber single-frequency DFB laser Optical path design The central wavelength of a conventional DFB fiber laser is 1550.16nm, and the side-to-side rejection ratio is greater than 40dB. Given that the 20dB linewidth of a DFB fiber laser is 69.8kHz, it can be known that its 3dB linewidth i...Read More -
Basic parameters of the laser system
Basic parameters of the laser system In numerous application fields such as material processing, laser surgery and remote sensing, although there are many types of laser systems, they often share some common core parameters. Establishing a unified parameter terminology system can help avoid confu...Read More -
What is a Si photodetector
What is a Si photodetector With the rapid development of modern technology, photodetectors, as an important sensor device, have gradually come into people’s view. Especially Si photodetector (silicon photodetector), with their superior performance and broad application prospects, hav...Read More -
New Research on Low-dimensional Avalanche Photodetector
New Research on Low-dimensional Avalanche Photodetector High-sensitivity detection of few-photon or even single-photon technologies holds significant application prospects in fields such as low-light imaging, remote sensing and telemetry, as well as quantum communication. Among them, avalanche ph...Read More
