What are the applications of LD pumped all-solid-state green lasers?
Medical applications
Because the human eye is most sensitive to green light, the 532ITm wavelength pulsed laser can be used in ophthalmic surgery; the pulsed green light can also be used to treat vascular diseases. The 532nm Q-switched pulsed laser with an output power of 3W is designed and manufactured to treat stroke. Because of its high power, the pulsed green laser has a relatively short action time on the skin, so that the laser will not heat the skin tissue around the target tissue non-selectively, which will not cause thermal damage and reduce the risk of surgery.
Application in the field of color display
Compared with other display light sources, laser display technology has the unique advantages of wide color gamut, high color purity, flexible display screen size, no harmful electromagnetic radiation, etc. It can be used in home theaters, digital theaters, large screen projections, and large public information Screens, teaching demonstrations, virtual reality simulation and many other fields have become the first choice for video display devices in the home and outdoor. The image displayed by the laser is richer and more vivid than the existing color TV, which can reflect the true color of nature, and can even display virtual colors. Therefore, the high-power three-primary solid-state laser as the key technology of laser color display has become the current international A major development direction in the field of laser research.
Application in laser precision machining
The green laser has the advantages of high brightness, small focusing spot, short action time, small heat-affected zone, and no large deformation of the workpiece due to processing. It can process some materials with high hardness and brittleness. It shows its unique advantages. In addition, lasers are also widely used in the electronics industry and can be used to adjust the resistance of miniature resistors. With the improvement of laser performance and the emergence of new lasers, the application of lasers in VLSI has become a key technology that many other processes cannot replace, showing an encouraging prospect for the development of VLSI.
As a laser pump source
Ultraviolet lasers and deep ultraviolet lasers have a wide range of applications in military, industrial, medical, printing, etc. The use of green light as the pump source is currently the most effective and widest method of generating ultraviolet and deep ultraviolet lasers. The solid-state laser pumped by LD can be used as the pumping source of the femtosecond laser. For example, if a green laser is used as the pumping source, the Ti: Al2O crystal is pumped to generate a femtosecond pulse. In addition, the green laser can also be used as the pump source of the parametric oscillator LD pumped solid-state continuous green laser. In addition, all-solid-state green lasers are also widely used in optical storage, information processing, laser spectroscopy and holography, coherent communication, laser entertainment, lidar, interferometry, optical data storage, and military industries. Therefore, the all-solid-state green laser has very important scientific research value and broad application prospects.
Use Green light has a wide range of applications in biology, industry, printing, medical, storage, display and military. In medical treatment, the pulsed green laser is commonly used (the advantages are high power, short acting time, and low risk). The green light is chosen in ophthalmic surgery because the human eye has the most light in this spectrum. Sensitive, for example, it is more commonly used in the treatment of myopia; it can also be used to treat prostate, vascular, neonatal hyperbilirubinemia and other diseases. In terms of optical storage, since the optical storage density is inversely proportional to the square of the optical wavelength, shortening the wavelength is an effective way to increase the optical storage density. Compared with the infrared and near-infrared bands used before, green light is used as the light storage energy Greatly improve the optical storage density. In terms of display, many laser pens currently use green lasers. In terms of industry, the peak power of ytterbium-doped green pulse fiber laser is extremely high, which can be used in marking, welding, engraving and other fields. In the military, green lasers can be used for laser guidance and laser air defense.
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