Laser cleaning is the use of high-energy laser beam irradiation material surface, so that the surface dirt, particles, rust or coating and other attachments occur instantaneous evaporation or stripping, so as to achieve clean and clean process. Compared with ordinary chemical and mechanical cleaning method 1mw laser pointer cleaning is a real green technology, without the use of solvents or grinding fluid, low energy consumption, cleaning effect is much higher than the traditional process, with a high cost. The scope of laser cleaning, from large block dirt (such as fingerprints, rust, oil, paint) to small particles (such as metal ultrafine particles, dust), will not cause damage to the substrate.

laser pointer

Laser cleaning can be used in fixed or mobile automatic or manual mode, you can also use optical fiber to the laser into the contaminated area, the operator only long-distance remote control operation, very safe and convenient, for some special applications, such as nuclear reactor condenser Of the rust, etc., has important significance. At present, laser de-lacquering technology has been extended from the limited application of military applications for a wide range of commercial applications within the broader. In addition to laser varnish, laser cleaning applications include surface treatment before welding, metal / mold cleaning, artifacts, works of art and building surface cleaning applications, highly promising.

If you use a circular fiber to clean up, there should be at least 25% overlap between the pulse area to complete the surface cleaning. In contrast, the use of square fiber is only 1% -2% of the overlap area. The same spot diameter of the square spot is 1.28 times the circular spot. The use of square fiber can be the smallest overlap area to get the maximum clean area, resulting in a higher erosion / cleaning rate. With the gradual promotion of 100mw laser pointer cleaning applications, as well as the cost of fiber laser production costs will be reduced, there will be more industry customers with fiber laser cleaning technology, and in the future, end consumers may also be in the civilian hand-held laser cleaning system In the benefit.

Near-infrared spectroscopy is the use of laser to the molecular camera, for the identification of molecules, because of its wide range of applications and become the world's military, civilian research cutting-edge subjects. The use of this technology to solve the problem of harmful gas detection on the orbital spacecraft, but also the elimination of harmful substances in the laser as the latest scientific research projects in the field of ultra-fast laser control to achieve the world's advanced level. Since the advent of the 20th century, 60 years, the red laser pointer has been in the industrial, medical, military and other fields widely used. In recent years, ultra-short pulse laser ultrafast laser has become a leading direction in the field of laser development. The shorter the pulse, the higher the accuracy of the laser, the greater the energy released. In the lab, the laser pulse is short to the femtosecond level (1 femtosecond is equal to one hundred thousandth of a second). Ultra-fast laser into the application of human tools to become another tool in the history of science and technology. Super energy release, making control, stability, measurement become a worldwide problem of flying femtosecond laser.

Ultrafast laser and material interaction mechanism, regulation and application research belongs to the field of optical engineering, carry out ultrafast photonics, information optics, molecular spectroscopy and plasma science frontier cross research. Due to the ultrafast time scale (corresponding to molecules, electron movement time) and ultra-high 50mw green laser intensity (which can easily penetrate any matter), ultrafast lasers interact with substances that contain rich linear and nonlinear optical effects that compete with each other Constraints, reflecting a high degree of non-linearity and extreme instability. Which hindered the development of relevant basic theoretical research, and caused its difficult to widely used.

First, in the ultra-high light intensity (~ 1014 W / cm2, equivalent to 1015 times the solar radiation to the Earth's light intensity), femtosecond scale (10-15 seconds, one hundred thousandth of a second) and wide electromagnetic wave wavelength range 0.3 microns to 3 cm) under the extreme experimental conditions to study the interaction between laser and material nonlinear dynamic mechanism for experimental research and development of regulatory methods to provide theoretical guidance. Secondly, the research on the principle of coherent control closely around the remote application needs, the results to achieve 100 meters order ultra-fast process, ultra-high light intensity control, to promote remote air pollution laser detection technology, remote 5mw green laser communication and other practical applications to provide a physical basis. Finally, the innovative application explores the ability to control both ultrafast time scales and spatial super-resolution, and achieved ultra-resolution microscopic imaging with exposure times as short as 50 femtoseconds and terahertz wave super-resolution microscopic imaging (resolution up to forty One of the wavelength) and other results, is expected to be used in early detection of cancer.