All Solid-State Passively Mode-Locked Ultrafast Lasers Based on Nd, Yb, and Cr Doped Media
Zhiyi Wei,Binbin Zhou,Yongdong Zhang,Yuwan Zou,Xin Zhong,Changwen Xu,Zhiguo Zhang +6 more
- 17 Oct 2012
- pp 73-114
TL;DR: In this paper, the Kerr-lens mode-locking (KLM) was used to generate ultrashort laser pulses, where the frequency range of the gain medium is inversely related to the bandwidth of the laser emission.
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Abstract: Mode-locking technique is a widely used method for generating ultrashort laser pulses. The mode-locked laser output is a sequence of equally spaced laser pulses. The pulse width is limited by the spectral range of the gain medium and inversely related to the bandwidth of the laser emission. Compared with the active mode-locking technique, passively modelocked laser with saturable absorber is able to generate much shorter pulse with a simple configuration. In particularly, based on the passive mode-locking mechanism, the Kerr-lens mode locking (KLM) Ti:sapphire laser is recognized as the most important ultrafast laser source. Not only a series of commercial femtosecond lasers with Ti:sapphire crystal were released, but also lead to many innovations in science, such as frequency comb, laser wake field acceleration, attosecond science, laser micro-fabrication etc. However, the major drawback of Ti:sapphire laser is its green pump laser source. Currently available green lasers generated by frequency doubled Nd:YAG laser or by Argon laser are relatively bulky and expensive, which limits the practical application of ultrafast Ti:sapphire lasers.
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References
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Semiconductor saturable absorber mirrors (SESAM's) for femtosecond to nanosecond pulse generation in solid-state lasers
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TL;DR: In this paper, the design requirements of SESAM's for stable pulse generation in both the mode-locked and Q-switched regime were reviewed, and the combination of device structure and material parameters provided sufficient design freedom to choose key parameters such as recovery time, saturation intensity, and saturation fluence.
Scalable concept for diode-pumped high-power solid-state lasers
TL;DR: In this article, a very thin laser crystal disc with one face mounted on a heat sink is proposed for diode-pumped high-power solid-state laser systems, which allows very high pump power densities without high temperature rises within the crystal and leads to an almost homogeneous and one-dimensional heat flux perpendicular to the surface.
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