Publications related to Ultrashort pulse

Tunable Carrier Multiplication and Cooling in Graphene

Marco Grioni, Alberto Crepaldi, Jens Christian Johannsen

Time- and angle-resolved photoemission measurements on two doped graphene samples displaying different doping levels reveal remarkable differences in the ultrafast dynamics of the hot carriers in the Dirac cone. In the more strongly (n-)doped graphene, we ...

Amer Chemical Soc2015

Direct monitoring of ultrafast electron and hole dynamics in perovskite solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Francisco Javier Ramos Mellado

Organic-inorganic hybrid perovskite solar cells have emerged as cost effective efficient light-toelectricity conversion devices. Unravelling the time scale and the mechanisms that govern the charge carrier dynamics is of paramount importance for a clear un ...

Royal Society of Chemistry2015

Sub-femtosecond precision measurement of relative X-ray arrival time for free-electron lasers

Christoph Bostedt, Christoph Peter Hauri

Today's brightest coherent X-ray sources, X-ray free-electron lasers, produce ultrafast X-ray pulses for which full-width at half-maximum durations as short as 3 fs have been measured(1). There has been a marked increase in the popularity of such short pul ...

2014

Mode Spectrum and Temporal Soliton Formation in Optical Microresonators

Tobias Kippenberg, Victor Brasch, Tobias Herr, John David Jost

The formation of temporal dissipative solitons in optical microresonators enables compact, high-repetition rate sources of ultrashort pulses as well as low noise, broadband optical frequency combs with smooth spectral envelopes. Here we study the influence ...

American Physical Society2014

Wideband generation of pulses in dual-pump optical parametric amplifier: theory and experiment

Camille Sophie Brès, Mohammad Amin Shoaie, Amirhossein Mohajerin Ariaei

The generation of pulses in dual-pump fiber optical parametric amplifier is investigated. Theoretically, it is shown that in an analogical manner to pulse generation in single-pump fiber optical parametric amplifiers, the generated pulse shape depends on t ...

Optical Society of America2014

Direct-write diffracting tubular optical components using femtosecond lasers

Yves Bellouard

Over the last decade, femtosecond lasers have been used extensively for the fabrication of optical elements via direct writing and in combination with chemical etching. These processes have been an enabling technology for manufacturing a variety of devices ...

SPIE-INT SOC OPTICAL ENGINEERING2014

Towards highest spectral efficiency: Optical sinc-shaped Nyquist pulses generation from rectangular frequency comb

Luc Thévenaz, Camille Sophie Brès, Marcelo Alfonso Soto Hernandez, Mohammad Amin Shoaie, Mohammad Mehdi Alem Karladani

In this paper, we review a method to produce optical sinc-shaped Nyquist pulses with unprecedented quality. The method is based on the synthesis of a rectangular shaped and phase-locked frequency comb from a combination of intensity modulators. The result ...

IEEE2014

Enhanced response in Brillouin distributed optical fibre sensors by simultaneous time and frequency pump multiplexing

Luc Thévenaz, Marcelo Alfonso Soto Hernandez, Li Zhang

A technique to enhance the response of Brillouin distributed sensors is proposed and experimentally validated. The method consists in creating a multi-frequency pump pulse interacting with a multi-frequency continuous-wave probe. The power of each pulse at ...

SPIE2014

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Ultrashort pulse

Tunable Carrier Multiplication and Cooling in Graphene

Direct monitoring of ultrafast electron and hole dynamics in perovskite solar cells

Ultrafast Broadband Spectroscopy on Correlated Materials

Sub-femtosecond precision measurement of relative X-ray arrival time for free-electron lasers

Mode Spectrum and Temporal Soliton Formation in Optical Microresonators

Femtosecond photoelectron and photoion spectrometer with vacuum ultraviolet probe pulses

Wideband generation of pulses in dual-pump optical parametric amplifier: theory and experiment

Direct-write diffracting tubular optical components using femtosecond lasers

Towards highest spectral efficiency: Optical sinc-shaped Nyquist pulses generation from rectangular frequency comb

Enhanced response in Brillouin distributed optical fibre sensors by simultaneous time and frequency pump multiplexing

Graph Chatbot

Chat with Graph Search

Direct monitoring of ultrafast electron and hole dynamics in perovskite solar cells

Sub-femtosecond precision measurement of relative X-ray arrival time for free-electron lasers

Femtosecond photoelectron and photoion spectrometer with vacuum ultraviolet probe pulses

Wideband generation of pulses in dual-pump optical parametric amplifier: theory and experiment

Direct-write diffracting tubular optical components using femtosecond lasers

Tunable Carrier Multiplication and Cooling in Graphene

Ultrafast Broadband Spectroscopy on Correlated Materials

Mode Spectrum and Temporal Soliton Formation in Optical Microresonators

Towards highest spectral efficiency: Optical sinc-shaped Nyquist pulses generation from rectangular frequency comb

Enhanced response in Brillouin distributed optical fibre sensors by simultaneous time and frequency pump multiplexing