{"product_id":"implementation-of-a-setup-for-broadband-femtosecond-transient-absorption-with-khz-acquisition-rate-von-maximilian-sohmen","title":"Implementation of a setup for broadband femtosecond transient absorption with kHz acquisition rate","description":"\u003cp\u003eBachelor Thesis from the year 2013 in the subject Physics - Electrodynamics, grade: 1,1, Free University of Berlin (Fakultät für Physik), language: English, abstract: It is the intention of this thesis to firstly present a theoretical modelling of how 400-nm pump pulses can be generated from a 800-nm fundamental, yielding the shortest possible pulses at a high conversion efficiency. Secondly, I describe how three different types of optical autocorrelation and the information about the pulse spectra and durations they incorporate can be used to characterise our present pulse amplification system. Thirdly, I will present a newly-implemented transient absorption setup which has been distinguished with respect to its noise sensitivity and to the chirp the probe beam accumulates after the supercontinuum generation process. Finally, I will discuss the transient absorption signature of a biomimetic photoswitch (dMe-MeO-NAIP) recorded with the new setup.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003eSince its beginnings in the late 1980s, ultrafast laser spectroscopy and, in particular, transient absorption has become a standard experimental method. It allows to investigate the photochemical properties of molecules with a temporal resolution down to the femtosecond timescale. However, major challenges for the implementation of a transient absorption setup continue to be the maintenance of pulse durations as short as possible and, on the other hand, noise prevention.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783668984004\"\u003e\u003ch3\u003e\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Softcover - 9783668984004","offer_id":39443106398301,"sku":"9783668984004","price":39.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/e8dc5f38-f3e1-4d66-863e-0f0fa15319c7.jpg?v=1781327990","url":"https:\/\/shop.autorenwelt.de\/products\/implementation-of-a-setup-for-broadband-femtosecond-transient-absorption-with-khz-acquisition-rate-von-maximilian-sohmen","provider":"Autorenwelt Shop","version":"1.0","type":"link"}