White laser has the advantages of having no traditional laser, and has been applied in many fields. White laser produced a variety of ways, many scientists on white laser technology research has been a strong interest.
Due to the laser generated laser restrictions, resulting in a good laser monochrome characteristics, but it has become a in the field of application of the short board; laser can not produce any wavelength of the laser, can not produce supercontinuum, ultra-wideband laser The In the field of laser applications, people have different requirements for the frequency (or wavelength) of the laser, and this time with the help of nonlinear crystals. But many bands of laser still can not be created.
At present, nonlinear crystals can produce only a limited range of wavelength laser. The narrow range of the laser, relative to the broad spectrum of white laser, it can carry the energy and information is much smaller than the latter. Therefore, all the coherent, super continuous, ultra-wideband, covered with white spectrum of white laser scientists become the focus of the study. White laser research and development, will also bring the field of laser revolution to revolution and subversion.
In real life, the most intuitive understanding of white light is display technology and lighting technology, they need to cover all the wavelengths of visible laser - white laser. In addition, according to the laser photon can carry energy and information this feature, white laser than the narrow wavelength range of monochromatic laser more advantages, can be used as optical communication and high power cutting alternative light source.
As the next generation of display technology, laser display is also subject to the scientific and technological community, the business community of common concern. Compared with the traditional display technology, laser display from the high brightness, clarity, color gamut, color saturation, life and other aspects have a leading edge, highly industrial prospects; many Chinese companies have set off a TV hot, related products Has been listed. From the root, white light laser light source research and development, is the fundamental premise of white laser applications.
The laser has a high monochromaticity, and all the optical radiation emitted by the laser is concentrated in a narrower frequency range compared to an ordinary light source. Thus in accordance with common sense, white laser is impossible to issue. However, by adjusting the intensity ratio of red, green and blue tricolor laser, the three primary colors meet, resulting in a white , so that it is impossible to become possible. It can be said that the white laser is the composite light of the entire visible spectrum. At present, there are many ways to produce white laser, but its roots, most of them are inseparable from the traditional laser - red, green and blue three-color laser figure.
In addition to the above methods, photonic crystal fiber white light lasers can also produce high-power, broadband and ultra continuous white light lasers. Its white light laser is mainly used in the field of photocurrent microscopy, nano photonics, fluorescence spectroscopy and imaging, super-resolution imaging, optical coherence tomography and many other fields. The characteristics of traditional laser not with white light , the shortcoming of traditional laser; change and development of white light laser source can bring more fields, and produce new scientific fields, as well as new applications; therefore, it will inevitably become the object of many scientists of the chase.