Search Results - "Tajalli, Ayhan"
-
1
Spatio-temporal focusing of an ultrafast pulse through a multiply scattering medium
Published in Nature communications (23-08-2011)“…Pulses of light propagating through multiply scattering media undergo complex spatial and temporal distortions to form the familiar speckle pattern. There is…”
Get full text
Journal Article -
2
Towards direct nonlinear compression of long-pulse lasers to the femtosecond regime
Published in EPJ Web of Conferences (2024)Get full text
Journal Article Conference Proceeding -
3
-
4
All-optical supercontinuum switching
Published in Communications physics (21-08-2020)“…Efficient all-optical switching is a challenging task as photons are bosons and cannot immediately interact with each other. Consequently, one has to resort to…”
Get full text
Journal Article -
5
Carrier-Envelope Offset Frequency Stabilization of a Thin-Disk Laser Oscillator via Depletion Modulation
Published in IEEE photonics journal (01-04-2020)“…We present a novel concept for the stabilization of the carrier-envelope offset (CEO) frequency of femtosecond pulse trains from thin-disk laser oscillators by…”
Get full text
Journal Article -
6
Propagation Effects in the Characterization of 1.5-Cycle Pulses by XPW Dispersion Scan
Published in IEEE journal of selected topics in quantum electronics (01-07-2019)“…Few-cycle pulse characterization methods face a serious challenge in providing sufficient signal-to-noise ratios together with superior spectral fidelity, as…”
Get full text
Journal Article -
7
Third and fifth order nonlinear susceptibilities in thin HfO 2 layers
Published in Optics express (05-06-2023)“…Third harmonic generation (THG) from dielectric layers is investigated. By forming a thin gradient of HfO with continuously increasing thickness, we are able…”
Get full text
Journal Article -
8
Writing 3D Waveguides With Femtosecond Pulses in Polymers
Published in Journal of lightwave technology (01-07-2021)“…We present novel waveguide writing concepts in bulk PMMA. The writing relies on laser induced modification tracks that are completely surrounding a waveguide…”
Get full text
Journal Article -
9
Below-threshold harmonic generation in gas-jets for Th-229 nuclear spectroscopy
Published in Optics express (10-04-2023)“…The generation of below-threshold harmonics in gas-jets constitutes a promising path towards optical frequency combs in the vacuum ultra-violet (VUV) spectral…”
Get full text
Journal Article -
10
Third and fifth order nonlinear susceptibilities in thin HfO2 layers
Published in Optics express (05-06-2023)Get full text
Journal Article -
11
Simple route toward efficient frequency conversion for generation of fully coherent supercontinua in the mid-IR and UV range
Published in Light, science & applications (01-02-2017)“…Fiber supercontinua represent light sources of pivotal importance for a wide range of applications, ranging from optical communications to frequency metrology…”
Get full text
Journal Article -
12
Generating Ultrabroadband Deep-UV Radiation and Sub-10 nm Gap by Hybrid-Morphology Gold Antennas
Published in Nano letters (10-07-2019)“…We experimentally investigate the interaction between hybrid-morphology gold optical antennas and a few-cycle Ti:sapphire laser up to ablative intensities,…”
Get full text
Journal Article -
13
Third Harmonic Generation and χ (5) Effects in Thin Gradient HfO 2 Layers
Published in EPJ Web of conferences (2022)Get full text
Journal Article -
14
Third Harmonic Generation and χ(5) Effects in Thin Gradient HfO2 Layers
Published in EPJ Web of conferences (01-01-2022)Get full text
Journal Article -
15
Time-resolving state-specific molecular dissociation with XUV broadband absorption spectroscopy
Published in Science advances (24-11-2023)“…The electronic and nuclear dynamics inside molecules are essential for chemical reactions, where different pathways typically unfold on ultrafast timescales…”
Get full text
Journal Article -
16
Efficient tunable UV pulse generation from a green pumped fs-OPCPA
Published in 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) (21-06-2021)“…High energy tunable ultrafast UV pulses are of great interest for a variety of applications. These pulses are also required for high repetition rate, fully…”
Get full text
Conference Proceeding -
17
Study of Third Harmonic Generation From Thin Gradient HfxAlyOz Layers
Published in 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) (21-06-2021)“…Third harmonic generation (THG) from multiple thin layer structures has proven its capability to reach conversion efficiencies up to the percentage level [1] ,…”
Get full text
Conference Proceeding -
18
Third harmonic generation from thin gradient ternary mixture layers
Published in 2021 Conference on Lasers and Electro-Optics (CLEO) (01-05-2021)“…By analyzing the third harmonic generation from gradient layers of the amorphous dielectric ternary mixture material Hf x Al y O z we are able to derive the…”
Get full text
Conference Proceeding -
19
Towards Sub-10-fs Pulses at 1 MHz Repetition Rate From an Optical Parametric Amplifier in the Visible Spectral Range
Published in 2021 Conference on Lasers and Electro-Optics (CLEO) (01-05-2021)“…We present a compact optical parametric amplification system operating in the visible spectral range. It delivers pulses with a Fourier-transform-limited pulse…”
Get full text
Conference Proceeding -
20
Video-Rate Phase Retrievals from Dispersion Scan Traces using Artificial Neural Networks
Published in 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) (01-06-2019)“…The full characterization of ultrashort pulses is crucial for all their applications. Lately, the dispersion scan (d-scan) technique has been developed, which…”
Get full text
Conference Proceeding