A 10-fs Multicolor Source for Ultrafast Spectroscopy and Quantum Communication

dc.contributor.authorHeberle, Dylan Andrew
dc.contributor.chairMoses, Jeffrey
dc.contributor.committeeMemberNishimura, Nozomi
dc.contributor.committeeMemberWise, Frank
dc.description156 pages
dc.description.abstractBroadband multicolor lasers are able to provide valuable information concerning ultrafast molecular dynamics through time-resolved spectroscopy. Here, I present my work developing a multicolor, 10-fs laser source through the marriage of three key technologies: (1) a high-repetition-rate, 10-fs, energetic NIR front end, (2) NIR pulse shaping, and (3) adiabatic frequency conversion. These technologies provide the means to generate femtosecond pulses in the visible, near-IR, and mid-IR with amplitude and phase control without multiple com plex dispersion-management schemes, constituting a toolbox of femtosecond pulses that can be used to probe fleeting molecular dynamics. 100-µJ, 10-fs pulses are generated from the NIR front end, which are shaped and compressed with NIR 4f pulse shapers and subsequently converted to 10-fs visible (MIR) pulse using dispersion-managed adiabatic sum (difference) frequency generation. Compression of the NIR pulses has been confirmed using SHG FROG. The MIR pulses were measured using a sensitive, phase-matching-free technique called frequency-resolved optical switching. Additionally, various ap plications are reviewed including quantum frequency homogenization, simultaneously converting visible single photons to the telecom C-band and reducing their spectral distinguishability, and ultrafast time-resolved spectroscopy experiments planned for single-layer graphene, rhodopsin and various mutants, and DNA.
dc.subjectadiabatic frequency conversion
dc.subjectmulticolor femtosecond laser
dc.subjectnonlinear optics
dc.subjectquantum frequency conversion
dc.subjectultrafast dynamics
dc.titleA 10-fs Multicolor Source for Ultrafast Spectroscopy and Quantum Communication
dc.typedissertation or thesis
dcterms.license Physics University of Philosophy D., Applied Physics


Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
15.28 MB
Adobe Portable Document Format