Ultrashort-pulse laser with an intracavity phase shaping element

Ultrashort-pulse laser with an intracavity phase shaping element.

A novel ultrashort-pulse laser cavity configuration that incorporates an intracavity deformable mirror as a phase control element is reported. A user-defined spectral phase relation of 0.7 radians relative shift could be produced at around 1035 nm. Phase shaping as well as pulse duration optimization was achieved via a computer-controlled feedback loop.

Ultrashort-pulse second-harmonic generation with longitudinally nonuniform quasi-phase- matching gratings: pulse compression and shaping

We present a theory of ultrashort-pulse second-harmonic generation (SHG) in materials with longitudinally nonuniform quasi-phase-matching (QPM) gratings. We derive an expression for the output second-harmonic field generated in an arbitrary QPM grating from an arbitrary fundamental field, valid for arbitrary material dispersion in the undepleted-pump approximation. In the case when group-veloci...

Pulse shaping and ultrashort laser pulse filamentation for applications in extreme nonlinear optics

English abstract This thesis deals with numerical studies of the properties and applications of spatio-temporally coupled pulses, conical wavepackets and laser filaments, in strongly nonlinear processes, such as harmonic generation and pulse reshaping. We study the energy redistribution inside these wavepackets propagating in gases and condensed media, in the linear and nonlinear regime. The en...

Ultra-broadband Phase-matching Ultrashort- Laser-pulse Measurement Techniques

Dedicated to my wife, Seonghee Jeong, and my parents iv ACKNOWLEDGEMENTS I wish to thank all people who helped me in many different ways during my graduate school years. First of all, I would like to especially thank Rick Trebino not only for sharing his knowledge and experience since the beginning, but also for his constantly encouraging and motivating me, which could make this thesis possible...

Electron Acceleration Using an Ultrashort Ultraintense Laser Pulse