Abstract
We have introduced several factors that can be useful for the modeling and analysis of high-power Ti:sapphire laser amplifiers. The amplification model includes the phase distortion effect caused by the atomic phase shift (APS) in gain medium and the thermal-induced phase distortion effect caused by the high-average-power amplification. We have provided an accurate amplification model for the development of ultra-high-intensity and high-average-power lasers.
Highlights
Owing to features such as excellent thermal conductivity, high mechanical durability, and wide amplification bandwidth, Ti:sapphire is widely used as a medium for high-power chirped pulse amplification (CPA) technology [1,2]
We provide a model of the atomic phase shift (APS) and
We have developed a pseudo-analytical method to simulate the amplification of laser pulses accurately and efficiently in the case of an overlap of two polarized orthogonal pulses by modifying the Frantz-Nodvik equation
Summary
Owing to features such as excellent thermal conductivity, high mechanical durability, and wide amplification bandwidth, Ti:sapphire is widely used as a medium for high-power chirped pulse amplification (CPA) technology [1,2]. The simulation model and analysis of the high-power laser amplifier introduced in this review will be useful for the design and development of laser systems. An interpretation of the phase distortion occurring in the active medium, which has a significant impact on the energy and spatio-temporal shape of the pulse, is included in this review [21,22]. The phase retardation generated inside a high-power laser medium, in the case of Ti:sapphire, is relatively inadequately researched and is essentially gaining attention for its effect [23]. The models introduced in this review are aimed at representing a laser system in a suitable form for the design and maintenance of high-power laser systems. It should be noted that most of the examples used in this review relate to the ulstrashort PW pulse generation using Ti:sapphire as the CPA medium
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