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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 -
The technology and development trends of attosecond lasers in China
The technology and development trends of attosecond lasers in China The Institute of Physics, Chinese Academy of Sciences, reported the measurement results of 160 as isolated attosecond pulses in 2013. The isolated attosecond pulses (IAPs) of this research team were generated based on high-order ...Read More -
Introduce InGaAs photodetector
Introduce InGaAs photodetector InGaAs is one of the ideal materials for achieving high-response and high-speed photodetector. Firstly, InGaAs is a direct bandgap semiconductor material, and its bandgap width can be regulated by the ratio between In and Ga, enabling the detection of optical...Read More -
The indicators of the Mach-Zehnder modulator
The indicators of the Mach-Zehnder modulator The Mach-Zehnder Modulator (abbreviated as MZM modulator) is a key device used to achieve optical signal modulation in the field of optical communication. It is an important component of Electro-Optic Modulator, and its performance indicators directly ...Read More -
Introduction to fiber optic delay line
Introduction to fiber optic delay line The fiber optic delay line is a device that delays signals by utilizing the principle that optical signals propagate in optical fibers. It is composed of basic structures such as optical fibers, EO modulators and controllers. Optical fiber, as a transmission...Read More -
The types of tunable laser
The types of tunable laser The application of tunable lasers can generally be divided into two major categories: one is when single-line or multi-line fixed-wavelength lasers cannot provide the required one or more discrete wavelengths; Another category involves situations where the laser ...Read More
