Amplitude concentration in a phase-modulated spectrum due to femtosecond filamentation

J. V. Thompson, P. A. Zhokhov, M. M. Springer, A. J. Traverso, V. V. Yakovlev, A. M. Zheltikov, A. V. Sokolov, M. O. Scully
<span title="2017-03-07">2017</span> <i title="Springer Nature"> <a target="_blank" rel="noopener" href="" style="color: black;">Scientific Reports</a> </i> &nbsp;
We present a method by which the spectral intensity of an ultrafast laser pulse can be accumulated at selected frequencies by a controllable amount. Using a 4-f pulse shaper we modulate the phase of the frequency components of a femtosecond laser. By inducing femtosecond filamentation with the modulated pulse, we can concentrate the spectral amplitude of the pulse at various frequencies. The phase mask applied by the pulse shaper determines the frequencies for which accumulation occurs, as well
more &raquo; ... as the intensity of the spectral concentration. This technique provides a way to obtain pulses with adjustable amplitude using only phase modulation and the nonlinear response of a medium. This provides a means whereby information which is encoded into spectral phase jumps may be decoded into measurable spectral intensity spikes.
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="">doi:10.1038/srep43367</a> <a target="_blank" rel="external noopener" href="">pmid:28266540</a> <a target="_blank" rel="external noopener" href="">pmcid:PMC5339899</a> <a target="_blank" rel="external noopener" href="">fatcat:pw442tbrpbhknpfu4yj4ueixtm</a> </span>
<a target="_blank" rel="noopener" href="" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href=""> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="unlock alternate icon" style="background-color: #fb971f;"></i> Publisher / </button> </a> <a target="_blank" rel="external noopener" href="" title="pubmed link"> <button class="ui compact blue labeled icon button serp-button"> <i class="file alternate outline icon"></i> </button> </a>