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Title

Operation principles of a femto-second Titanium: Sapphire laser system

Author

Γράσσος, Ευάγγελος Σ.

Thesis advisor

Χαραλαμπίδης, Δημήτρης
Τζάλλας Παρασκευάς

Abstract

Ultra-short laser pulses are consider to be those whose duration is less than a few pico-seconds (10¹³s ) long. In this project are presented the operation principles of a femto-second Titanium: Sapphire laser system, describing the complete laser system arrangement as well as the processes that take place and the techniques that are used. The process begins with the generation of the initial laser pulse inside the oscillator using the ''Kerr lens mode-locking technique'' and continuous with the pulse undergoing through the ''chirped pulse amplification (CPA) process''. A method of a laser pulse amplification that consists of three different stages, using three separate devices. These devices are the stretcher the regenerative and multi-pass amplifier and the compressor and are responsible for the formation of the laser pulse until it reaches its final form. The process follow this exact order in the laser system arrangement firstly stretching out the pulse temporally in the stretcher afterwards amplifying the pulse in the regenerative and multi-pass amplifier and lastly compressing the pulse in the compressor until it has reached the desirable duration and power levels.

Language

English

Subject

Ultra - Short Laser Pulses

Issue date

2014-07-25

Collection

School/Department--School of Sciences and Engineering--Department of Physics--Graduate theses

Type of Work--Graduate theses

Permanent Link

https://elocus.lib.uoc.gr//dlib/8/f/f/metadata-dlib-1404461280-92426-12301.tkl