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Polarization of laser
Polarization of laser “Polarization” is a common characteristic of various lasers, which is determined by the formation principle of the laser. The laser beam is produced by the stimulated radiation of the light-emitting medium particles inside the laser. Stimulated radiation has a re...Read More -
Power density and energy density of laser
Power density and energy density of laser Density is a physical quantity we are very familiar with in our daily life, the density we contact most is the density of the material, the formula is ρ=m/v, that is, density is equal to mass divided by volume. But the power density and energy density of ...Read More -
Important performance characterization parameters of laser system
Important performance characterization parameters of laser system 1. Wavelength (unit: nm to μm) The laser wavelength represents the wavelength of the electromagnetic wave carried by the laser. Compared to other types of light, an important feature of laser is that it is monochromatic, ...Read More -
Fiber bundle technology improves the power and brightness of blue semiconductor laser
Fiber bundle technology improves the power and brightness of blue semiconductor laser Beam shaping using the same or close wavelength of the laser unit is the basis of multiple laser beam combination of different wavelengths. Among them, spatial beam bonding is to stack multiple laser beams in sp...Read More -
Introduction to Edge Emitting Laser (EEL)
Introduction to Edge Emitting Laser (EEL) In order to obtain high-power semiconductor laser output, the current technology is to use edge emission structure. The resonator of the edge-emitting semiconductor laser is composed of the natural dissociation surface of the semiconductor crystal, and th...Read More -
High performance ultrafast wafer laser technology
High performance ultrafast wafer laser technology High-power ultrafast lasers are widely used in advanced manufacturing, information, microelectronics, biomedicine, national defense and military fields, and relevant scientific research is vital to promote national scientific and technological inn...Read More -
TW class attosecond X-ray pulse laser
TW class attosecond X-ray pulse laser Attosecond X-ray pulse laser with high power and short pulse duration are the key to achieve ultrafast nonlinear spectroscopy and X-ray diffraction imaging. The research team in the United States used a cascade of two-stage X-ray free electron lasers to outpu...Read More -
Introduction to vertical cavity surface emitting semiconductor laser (VCSEL)
Introduction to vertical cavity surface emitting semiconductor laser (VCSEL) Vertical external cavity surface-emitting lasers were developed in the mid-1990s to overcome a key problem that has plagued the development of traditional semiconductor lasers: how to produce high-power laser outputs wit...Read More -
Excitation of second harmonics in a wide spectrum
Excitation of second harmonics in a wide spectrum Since the discovery of second-order nonlinear optical effects in the 1960s, has aroused wide interest of researchers, so far, based on the second harmonic, and frequency effects, has produced from the extreme ultraviolet to the far infrared band o...Read More -
Polarization electro-optic control is realized by femtosecond laser writing and liquid crystal modulation
Polarization electro-optic control is realized by femtosecond laser writing and liquid crystal modulation Researchers in Germany have developed a novel method of optical signal control by combining femtosecond laser writing and liquid crystal electro-optic modulation. By embedding liquid crystal ...Read More -
Change the pulse speed of the super-strong ultrashort laser
Change the pulse speed of the super-strong ultrashort laser Super ultra-short lasers generally refer to laser pulses with pulse widths of tens and hundreds of femtoseconds, peak power of terawatts and petawatts, and their focused light intensity exceeds 1018 W/cm2. Super ultra-short laser and its...Read More -
Single photon InGaAs photodetector
Single photon InGaAs photodetector With the rapid development of LiDAR, the light detection technology and ranging technology used for automatic vehicle tracking imaging technology also have higher requirements, the sensitivity and time resolution of the detector used in the traditional low light...Read More
