In the laser light source for the tide of the change cycle, this is not Japanese, Europe and the United States and other brands in the promotion, but the national projection brand in the commitment to bear. Industry sources, which domestic projection brand in the Eastern Central Plains in the past to the distribution of enterprises in the laser display and this round of change in the most active and bold. This two years in the high power laser pointer display technology is very hard, for education, engineering, two major market segments also deliberately launched two sub-brand, and in these two segments of the market to achieve good results.
Researchers have previously demonstrated the injection of AlGaN nanowires deep ultraviolet lasers at 262 nm and 289 nm. These lasers have much higher compositional regulation, forming quantum dot-like structures that produce very few threshold currents of only a few tens of microamps. However, because of the high composition of the control to suppress shorter wavelengths of laser emission, the researchers had to improve the composition uniformity to produce 200mw laser pointer emission at 239 nm. Higher homogeneity results in the disappearance of quantum dot-like properties and increases the threshold current to 0.35 mA. But the 239nm threshold current is still quite low, which will help to achieve laser-based, battery-powered deep UV instruments.
Laser projection technology from the beginning of 14 years, the three years the number of manufacturers involved in laser projection doubled, the market stock model growth of several times, the product type to complete the possible coverage of all possible product lines, sales also achieved a huge breakthrough. Laser projector after a few years of precipitation and reserves, last year (2016) to become the rise of laser projection, according to research data show that 2016 laser projection market sales of more than 150,000 units, sales volume of 5.5 billion. And 2017 this year, the expected sales of 500mw laser pointer projectors, is expected to be possible to break 30 million units, which will mark the laser projection has been fully into the rapid development period.
In the laser color technology is also every year to seek change and innovation, such as the beginning of the monochrome fluorescence technology, to last year successfully use two-color laser to the project projector. And this year, according to industry sources told the audio-visual circle, the East in the field of high-end engineering projectors directly aim at the color of three primary colors of laser technology, color performance should be the perfect pursuit of the end.
According to industry sources, in the three-color laser technology and some companies may be cooperation, the original three-color burning laser pointer project projector starting ceremony was in April infocomm show debut, but because of some uncontrollable factors lead to temporary cancellation of the release, And this three-color laser project projector is expected to be officially launched next month.
Over the years, the short wavelength limit of the laser diode has moved from the red side of the visible spectrum to the near ultraviolet band. However, many applications, such as Raman spectra for chemical and biochemical sensing, surface analysis and medical use, can benefit from the development of deep ultraviolet laser diodes that can be battery operated for use in portable instruments.
The laser diode can be multiplied and quadrupled to produce narrowband output deep ultraviolet light at wavelengths shorter than 193 nm. While these 300mw laser pointer are more compact and user-friendly than other types of deep ultraviolet light sources (such as excimer lasers), they are still not as compact, simple and low-power as conventional laser diodes.
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