Extending ultrashort-laser-pulse measurement techniques to new dimensions, time scales, and frequencies

Ultrafast devices;Ultrafast measurements;Ultrafast phenomena;Pulses

Akturk, Selcuk ; Physics

University:Georgia Institute of Technology

Department:Physics

关键词: Ultrafast devices;    Ultrafast measurements;    Ultrafast phenomena;    Pulses;   

Others  :  https://smartech.gatech.edu/bitstream/1853/6892/1/akturk_selcuk_200505_phd.pdf

美国|英语

来源: SMARTech Repository

【 摘 要 】

In the last decade, there has been tremendous progress in the field of ultrashort-pulse measurement. However, this effort has focused mostly on the temporal behavior of 100-fs, 800-nm ultrashort pulse, ignoring other pulse lengths, wavelengths, and the very common space-time couplings or so called spatio-temporal distortions. In this thesis work, I do an extensive study of spatio-temporal distortions and their measurement using Frequency Resolved Optical Gating (FROG) and its relatives. I clarify some ambiguities in the descriptions of these effects in the existing theory and establish a more general description of such distortions in ultrashort pulses. I also extend these measurement techniques to different wavelengths and pulse lengths. Specifically, I develop measurement devices for few-cycle NIR pulses, weak and narrowband fiber laser pulses, long (several-ps) NIR pulses, and visible pulses from NOPAs.