Femtosecond laser is a laser that operates in pulses with very short duration (10-15s) and high peak power. It not only enables us to obtain ultra-short time resolution but also, because of its high peak power, it has been greatly developed in various fields of industry.
The femtosecond titanium gemstone laser, which consists of a femtosecond laser oscillator and a femtosecond laser amplifier, is the most commonly used laser for applications that can generate femtosecond-scaled pulses. Through the self-locking principle of titanium gemstone and the world’s leading-edge chirped pulse amplification (CPA) technology, it is possible to directly generate laser pulses of a few femtoseconds with a peak power of terawatts.
As the use of femtosecond lasers has become more widespread in various fields, the lasers and technologies that can generate femtoseconds have also undergone several generations of innovation. From dye lasers to solid-state lasers, from Q-modulation to mode-locked technology, and even the application of self-locked mode-locking technology that can produce shorter pulses today, ultrashort pulse technology has developed by leaps and bounds in just a few years. Among them, titanium-doped sapphire lasers with self-mode-locking technology are a hot topic in ultrashort pulse technology.
Given the broad fluorescence spectrum of titanium-doped sapphire crystals, if the longitudinal mode of the laser is locked, theoretically can directly produce several femtoseconds of pulse output, without the need to choose another pulse width compression technology, which is not available in other laser. In China, the research and application of titanium-doped sapphire lasers, although there has been a great degree of development, on the titanium gemstone lasers in Chinese books and readings are very few. This paper is Shanghai Xinkehui New Material Co., Ltd gives a systematic exposition on the working principle of titanium gemstone laser from titanium gemstone laser oscillator, titanium-doped sapphire gain characteristics, self-locking principle, dispersion, and its titanium gemstone laser amplifier.
Therefore, the purpose of this paper is still to have an all-round, specific, in-depth exposition of femtosecond lasers, their working principle, nature, and application of a general summary, used to enrich the knowledge of femtosecond titanium gemstone lasers.
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Post time: Oct-24-2023