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Intense THz source based on BNA organic crystal pumped at Ti:sapphire wavelength

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Dynamics and Applications of Dissipative Kerr Solitons

Maxim Karpov

Optical frequency combs are optical sources, which spectrum consists of a series of equally spaced narrowband frequencies. They made an outstanding leap forward in the accuracy of optical frequency metrology and became an attractive tool for numerous appli ...

EPFL2020

Generating optical pulses via a soliton state of an optical microresonator coupled with a chip based semiconductor laser

Tobias Kippenberg, Hairun Guo, Arslan Sajid Raja

A light pulse source (100), being adapted for generating repetitive optical pulses (1), comprises a continuous wave cw laser device (10) being arranged for providing cw laser light (2), an optical waveguide (20) being optically coupled with the cw laser de ...

2020

Narrow-band and tunable intense terahertz pulses for mode-selective coherent phonon excitation

We generate frequency-tunable narrow-band intense fields in the terahertz (THz) range by optical rectification of a temporally modulated near-infrared laser pumping a nonlinear organic crystal. Carrier-frequency tunability between 0.5 and 6.5THz is achieve ...

2020

Peculiarities of second harmonic generation with chirped femtosecond pulses at high conversion efficiency

Pierre-Marc Jean Marie Dansette

Frequency doubling of an infrared laser radiation in non-linear optical crystals is a widely used technique to obtain light in the visible range. The second harmonic generation process is influenced by several well-known parameters. In this article we stud ...

ELSEVIER2020

Quantum cascade lasers are bright and compact semiconductor lasers that emit light in the mid- to far-infrared spectral region. The use of a closed ring cavity has now set them on the path towards ultrafast pulses. ...

NATURE PUBLISHING GROUP2020

The ideal laser source for nonlinear terahertz spectroscopy offers large versatility delivering both ultra-intense broadband single-cycle pulses and user-selectable multi-cycle pulses at narrow linewidths. Here we show a highly versatile terahertz laser pl ...

OPTICAL SOC AMER2020

Tunable few-optical cycle pulses and advanced ultrafast spectroscopic techniques

Aurelio Oriana

Continuous progress in the development of light sources for the generation of tunable ultrashort pulses from the near-infrared to all the visible range provides a very efficient tool for spectroscopic techniques able to follow ultrafast dynamical processes ...

SOC ITALIANA FISICA2018

Frequency Comb Stabilization of Ultrafast Lasers by Opto-Optical Modulation of Semiconductors

Sargis Hakobyan

In this paper, we review the current state and discuss new developments in opto-optical modulation (OOM) of semiconductor elements for frequency comb self-referenced stabilization of ultrafast lasers. This method has been successfully used for carrier-enve ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2018

Subcycle Extreme Nonlinearities in GaP Induced by an Ultrastrong Terahertz Field

Christoph Peter Hauri, Mostafa Shalaby

We report on the experimental observation of extreme laser spectral broadening and a change in optical transmission in gallium phosphite induced by 25 MV/cm terahertz (THz) single-cycle internal field. Such intense THz radiation leads to twofold transient ...

American Physical Society2017

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Octave-spanning, self-referenced frequency combs are applied in diverse fields ranging from precision metrology to astrophysical spectrometer calibration. The octave-spanning optical bandwidth is typically generated through non-linear spectral broadening o ...

Optical Soc Amer2017