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Ultrafast Laser: Subdivision Time, Subdivision Field

Mar 01, 2020

Due to its significant advantages in processing accuracy, ultrafast lasers have become one of the most important technical directions in the field of energy lasers. As the technology matures and costs continue to fall, the ultrafast laser market is expected to usher in an explosion in the next few years. In the future, it is expected to be widely used in medical biology, aerospace, consumer electronics, lighting display, energy environment, precision machinery and other industries.

Ultrafast lasers are pulse lasers that output lasers with a pulse width in the picosecond (10-12 second) level or less. According to the pulse width of the output laser, ultrafast lasers can be divided into picosecond lasers, femtosecond lasers, and attosecond lasers. In general, the narrower the pulse width, the higher the machining accuracy.

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The picosecond laser is a laser with a pulse width of picosecond. At present, a diode-pumped Nd: YAG or Nd: YLF laser using an acousto-optic modulation mode-locked laser can generate a standard light source with picosecond pulses. The picosecond laser has the characteristics of picosecond ultra-short pulse width, adjustable repetition frequency, and high pulse energy. An increasingly important tool in analytical systems.

The femtosecond laser is an ultra-strong, ultra-short pulse laser whose period can be calculated in femtoseconds. Its appearance has provided human beings with unprecedented new experimental methods and physical conditions, and has a very broad application prospect. Femtosecond lasers have fast and high-resolution characteristics. They have their unique advantages and irreplaceable effects in early diagnosis of lesions, medical imaging and biological detection, surgery and the manufacture of ultra-small satellites. Femtosecond lasers can even be used for gene therapy, and German scientists have used them to test in mouse cells and have achieved remarkable results. A femtosecond laser vision correction system developed by a company in California has completed 20,000 operations, bringing the good news to patients. Some scientists have found that using ultra-short pulse lasers can remove a small piece of teeth without affecting the surrounding material. An ultra-short laser dentistry that is painless and protects the surrounding healthy enamel is emerging in people's expectations.

The main feature of the attosecond laser is reflected in its name "attosecond", which is reflected in the time scale as "fast". In the most basic microworld, the boundaries of biology, chemistry, and physics are gradually disappearing, because they all come from the movement of electrons. For example, the electronic movement in the molecule is responsible for the transfer of biological information, changing chemical products and biological system functions. The speed of information processing can be improved by using smaller nano-circuits. Shorter. The study of such a fast dynamic process is the driving force behind the development of the field of attosecond lasers, and also the most important feature of attosecond lasers. At present, the method of generating attosecond laser pulses is mainly the gas harmonic method.

Wuhan Kings Laser Co., Ltd. is a China domestic industrial chain product manufacturing service provider of laser accessories, lasers and laser equipment. It provides laser development, production, sales and technical services. Reasonable positioning and strong technical strength allow kings laser in this field is rising rapidly, becoming a world-renowned laser device supplier.


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