Beautiful Life

Antimony inter-band cascade lasers are new semiconductor lasers based on quantum effects and band engineering. They are combined with the radiation between electrons and holes through the transition between conduction band and valence band. Each active region is connected by a similar quantum cascade Series connection. It combines the advantages of traditional semiconductor interband transition lasers and quantum cascade 30mw green laser based on subband transitions, such as uniform carrier injection, high quantum efficiency, easy wavelength regulation, threshold current density and low power consumption. Therefore, the antimicrobial inter-band cascade lasers have important application prospects in environmental monitoring, medical diagnosis and information gathering in Internet of Things, but their structure is complex and the number of epitaxial layers is large, which makes the material grow very difficult.

By using the photon amplification technique, combined with the statistical properties of the laser and the spontaneous photon, it is possible to make the angular resolution of the telescope exceed the diffraction limit. In the traditional multi-photon microscopy, the ultrashort laser pulse gathers into a close spot on the sample, stimulating the fluorescence to produce an image. And multi-photon-space frequency modulation imaging microscope is to use multiple femtosecond laser pulse at the same time illuminate the larger light area to interfere, in order to build the image.

Technology for the first time to achieve a dual-view 10 watt laser pointer scanning based on real-time stereoscopic imaging and display system, the three-dimensional imaging speed than the traditional point-by-point scanning method to improve the order of one to two orders of magnitude. In other words, the imaging process from the previous few minutes to tens of minutes is completed in a few seconds, and the two-photon stereomicroscopic imaging system provides a new observing tool for 3D real-time imaging and display of living organisms. To observe the transmission of the fleeting neural signal in the neural network. The use of an elongated focused laser beam - Bessel beam to complete the scan, through the control of the beam, you can not do light slices, a one-time will be a thick three-dimensional sample clear imaging.

The development of industrial lasers, relative to scientific applications and medical applications, the requirements of industrial processing is the most advanced. First of all, its working environment is generally more stringent, followed by the laser for a long time reliability, stability, the most stringent requirements. It is mainly used in the cutting, micromachining and non-destructive microfabrication and fine marking of transparent brittle materials. High-power green 500mw laser pointer that can be used in the PCB field are highly representative. Because of its unique high power, in the solar cell dicing, ceramic cutting, including the touch screen manufacturing process can play a lot of role.

The more representative products in the research laser are miniaturized, compact lasers and large energy lasers, mainly used in laser shock enhancement, laser radar, mass spectrometry, including spectral detection. In addition to the industrial laser in addition to the high-power, low-power picosecond lasers, this year also developed a 30-watt green nanosecond, this new laser is the most important feature of the pulse width is relatively narrow, while power Relatively high. Medical line is displayed on the trump card products: medical beauty special picosecond laser. Used in mobile phones, hardware, medical device industry MOPA pulse width adjustable fiber kids laser pointer with high precision, high processing speed, anti-high anti-technical characteristics.

For a given laser power density and material, the cutting speed is in accordance with an empirical formula. As long as the threshold is above the threshold, the cutting speed of the material is proportional to the laser power density, that is, increasing the power density can increase the cutting speed. The power density referred to here is related not only to the laser output power but also to the beam quality mode. In addition, the characteristics of the beam focusing system, that is, after focusing the spot size also has a great impact on laser cutting.

Since the laser power density has a great influence on the cutting speed, the choice of lens focal length is an important problem. After focusing the high power laser pointer beam, the spot size is proportional to the focal length of the lens. After the beam is focused by the short focal length lens, the spot size is very small and the power density at the focal point is very high, which is advantageous for cutting the material; but its disadvantage is that the depth of focus is very short, Small, generally more suitable for high-speed cutting thin materials. As the telephoto lens has a wide focal depth, as long as there is sufficient power density, more suitable for cutting thick workpiece.

http://laserlife.over-blog.com/2017/03/semiconductor-laser-beam-technology.html

http://eyes123456.pixnet.net/blog/post/304478032

http://gameport.jp/user/12124/blog/11569/