1.8k citations · 2.4k across the 8 of their papers we have counts for
9 papers
Bright Coherent Ultrahigh Harmonics in the keV X-Ray Regime from Mid-Infrared Femtosecond Lasers
Tenio Popmintchev, Ming-Chang Chen, Dimitar Popmintchev +17
High harmonic generation traditionally combines ~100 near-infrared laser photons, to generate bright, phase matched, extreme ultraviolet beams when the emission from many atoms add…
The role of intraband dynamics in the generation of circularly polarized high harmonics from solids
Nicolai Klemke, Nicolas Tancogne-Dejean, Angel Rubio +2
Recent studies have demonstrated that the polarization states of high harmonics from solids can differ from those of the driving pulses. To gain insights on the microscopic origin…
Fully stabilized multi-TW optical waveform synthesizer for gigawatt soft-x-ray isolated attosecond pulses
Bing Xue, Yuuki Tamaru, Yuxi Fu +6
A stable 50 mJ three-channel optical waveform synthesizer is demonstrated and used to reproducibly generate a high-order harmonics supercontinuum in the soft-x-ray region. This syn…
Velocity-map imaging for emittance characterization of multiphoton-emitted electrons from a gold surface
Hong Ye, Sebastian Trippel, Michele Di Fraia +4
A velocity-map-imaging spectrometer is demonstrated to characterize the normalized transverse emittance of photoemitted electron bunches. The two-dimensional (2D) projected velocit…
Impact of the electronic band structure in high-harmonic generation spectra of solids
Nicolas Tancogne-Dejean, Oliver D. Mücke, Franz X. Kärtner +1
An accurate analytic model describing high-harmonic generation (HHG) in solids is derived. Extensive first-principles simulations within a time-dependent density-functional framewo…
Cascaded Parametric Amplification for Highly Efficient Terahertz Generation
Koustuban Ravi, Michael Hemmer, Giovanni Cirmi +4
A highly efficient, practical approach to high-energy terahertz (THz) generation based on spectrally cascaded optical parametric amplification (THz-COPA) is introduced. The THz wav…
Attosecond Precision Multi-km Laser-Microwave Network
M. Xin, K. Shafak, M. Y. Peng +4
Synchronous laser-microwave networks delivering attosecond timing precision are highly desirable in many advanced applications, such as geodesy, very-long-baseline interferometry,…
Terahertz Generation in Lithium Niobate Driven by Ti:Sapphire Laser Pulses and its Limitations
Xiaojun Wu, Sergio Carbajo, Koustuban Ravi +5
We experimentally investigate the limits to 800 nm-to-terahertz (THz) energy conversion in lithium niobate at room temperature driven by amplified Ti:Sapphire laser pulses with til…
Carrier-envelope phase sensitive inversion in two-level systems
Christian Jirauschek, Lingze Duan, Oliver D. Mücke +3
We theoretically study the carrier-envelope phase dependent inversion generated in a two-level system by excitation with a few-cycle pulse. Based on the invariance of the inversion…