Single-frame complete spatiotemporal measurement of complex ultrashort laser pulses

Guang, Zhe

Title:

Single-frame complete spatiotemporal measurement of complex ultrashort laser pulses

dc.contributor.advisor	Trebino, Rick
dc.contributor.author	Guang, Zhe
dc.contributor.committeeMember	Adibi, Ali
dc.contributor.committeeMember	Curtis, Jennifer E.
dc.contributor.committeeMember	Chapman, Michael S.
dc.contributor.committeeMember	Jiang, Zhigang
dc.contributor.department	Physics
dc.date.accessioned	2017-06-07T17:34:35Z
dc.date.available	2017-06-07T17:34:35Z
dc.date.created	2016-05
dc.date.issued	2016-04-01
dc.date.submitted	May 2016
dc.date.updated	2017-06-07T17:34:36Z
dc.description.abstract	Today one of the frontiers in light measurement is to measure ultrashort pulses from ultrafast laser systems, which demonstrate extremely fast temporal variations, and are necessarily associated with large spectral bandwidths by Fourier transform. In addition to the temporal and spectral structures, ultrashort pulses can also be complex in space. Especially, the field can have spatiotemporal couplings which relate pulse temporal profile to spatial coordinates. Therefore, a complete spatiotemporal measurement technique is needed. In this work, we demonstrate our study on measuring complex ultrashort pulses by development of a method, called Spatially and Temporally Resolved Intensity and Phase Evaluation Device: Full Information from a Single Hologram (STRIPED FISH). Based on digital holography, this simple single-frame method can measure the complete spatiotemporal intensity I(x,y,t) and phase ϕ(x,y,t) of pulses at a particular z-plane. By experiments, we investigated sub-picosecond chirped pulse beating, pulses from multimode optical fibers, ultrafast lighthouse effect and so on, using STRIPED FISH. We also performed numerical simulations to understand the effects of different spatiotemporal distortions on STRIPED FISH trace. With its improved apparatus, processing algorithm, and display method, STRIPED FISH offers a simple and compact solution to monitor, measure, and display spatiotemporal structures in ultrashort pulses.
dc.description.degree	Ph.D.
dc.format.mimetype	application/pdf
dc.identifier.uri	http://hdl.handle.net/1853/58133
dc.language.iso	en_US
dc.publisher	Georgia Institute of Technology
dc.subject	Ultrafast optics
dc.subject	Ultrafast measurement
dc.title	Single-frame complete spatiotemporal measurement of complex ultrashort laser pulses
dc.type	Text
dc.type.genre	Dissertation
dspace.entity.type	Publication
local.contributor.advisor	Trebino, Rick
local.contributor.corporatename	College of Sciences
local.contributor.corporatename	School of Physics
relation.isAdvisorOfPublication	40e4f324-6c45-4fe1-ac68-68c3ea37970f
relation.isOrgUnitOfPublication	85042be6-2d68-4e07-b384-e1f908fae48a
relation.isOrgUnitOfPublication	2ba39017-11f1-40f4-9bc5-66f17b8f1539
thesis.degree.level	Doctoral