99 citations · 523 across the 18 of their papers we have counts for
18 papers
Hybrid air-bulk multi-pass cell compressor for high pulse energies with full spatio-temporal characterization
Alan Omar, Martin Hoffmann, Geoffrey Galle +2
Multi-pass cell (MPC) compressors have proven to be the method of choice for compression of high average power long-pulse Yb lasers. Yet, generating sub-30 fs pulses at high pulse…
High-power sub-picosecond filamentation at 1.03 μm with high repetition rates between 10 and 100 kHz
Robin Löscher, Victor Moreno, Dionysis Adamou +5
Filamentation has extensively been explored and is well understood at repetition rates <1 kHz due to the typical availability of multi-mJ laser systems at a moderate average power.…
Photoconductive receivers at 1030 nm for high average power pulsed THz detection
Tim Vogel, Samira Mansourzadeh, Uttam Nandi +3
In the last few years, many advances have been made in the demonstration of high-average power pulsed THz sources; however, little effort has been made to study compatible sensitiv…
Towards Intense Ultra-Broadband High Repetition Rate Terahertz Sources Based on Organic Crystals [Invited]
Samira Mansourzadeh, Tim Vogel, Alan Omar +4
Increasing the average power of broadband, few-cycle terahertz (THz) sources is currently a topic of intense investigation, fueled by recent immense progress in high average power…
Temperature-Dependent THz Properties and Emission of Organic Crystal BNA
Samira Mansourzadeh, Tim Vogel, Mostafa Shalaby +1
As high-average power ultrafast lasers become increasingly available for nonlinear conversion, the temperature dependence of the material properties of nonlinear crystals becomes i…
Low-noise, 2-W average power, 112-fs Kerr-lens mode-locked Ho:CALGO laser at 2.1 um
Weichao Yao, Yicheng Wang, Shahwar Ahmed +4
We report on an in-band pumped soft-aperture Kerr-lens mode-locked Ho:CALGO bulk laser at 2.1 um, generating 2 W of average power with 112 fs pulses at 91-MHz repetition rate. To t…
Spectral broadening of 2 mJ femtosecond pulses in a compact air-filled convex-concave multi-pass cell
Alan Omar, Tim Vogel, Martin Hoffmann +1
Multi-pass cell (MPC) based temporal pulse compressors have emerged in the last years as a powerful and versatile solution to the intrinsic issue of long pulses from Yb-based high-…
Broadband THz-TDS with 5.6 mW average power at 540 kHz using organic crystal BNA
Samira Mansourzadeh, Tim Vogel, Alan Omar +3
We demonstrate efficient optical rectification in the organic crystal BNA (N-benzyl-2-methyl-4-nitroaniline), driven by a temporally compressed, commercially available industrial Y…
400 kHz repetition rate THz-TDS with 24 mW of average power driven by a compact industrial Yb-laser
Celia Millon, Sarah Houver, Clara J. Saraceno
We demonstrate a high average power terahertz time-domain (THZ-TDS) spectrometer based on optical rectification in the tilted-pulse front geometry in lithium niobate at room temper…
8.7-W average power, in-band pumped femtosecond Ho:CALGO laser at 2.1 um
Weichao Yao, Yicheng Wang, Sergei Tomilov +7
We report on an in-band pumped SESAM mode-locked Ho:CALGO bulk laser with a record-high average power of 8.7 W and an optical-to-optical efficiency of 38.2% at a central wavelength…
Temperature-independent non-linear terahertz transmission by liquid water
Célia Millon, Johannes Schmidt, Sashary Ramos +4
Liquid water is one of the most studied substances, yet many of its properties are difficult to rationalize. The uniqueness of water is rooted in the dynamic network of hydrogen-bo…
50-W average power Ho:YAG SESAM-modelocked thin-disk oscillator at 2.1 um
Sergei Tomilov, Yicheng Wang, Martin Hoffmann +4
Ultrafast laser systems operating with high-average power in the wavelength range from 1.9 um to 3 um are of interest for a wide range of applications for example in spectroscopy,…
Average power scaling of THz spintronic emitters in reflection geometry
Tim Vogel, Alan Omar, Samira Mansourzadeh +10
Metallic spintronic THz emitters have become well-established for offering ultra-broadband, gap-less THz emission in a variety of excitation regimes, in combination with reliable f…
Moving towards high-power thin-disk lasers in the 2-μm wavelength range
Sergei Tomilov, Martin Hoffmann, Yicheng Wang +1
Thin-disk lasers (TDLs) have made spectacular progress in the last decades both in continuous-wave and ultrafast operation. Nowadays, single thin-disk oscillators with > 16 kW of c…
Milliwatt average power, MHz-repetition rate, broadband THz generation in organic crystal BNA with diamond substrate
Samira Mansourzadeh, Tim Vogel, Mostafa Shalaby +2
We demonstrate a 13.3 MHz repetition rate, broadband THz source with milliwatt-average power, obtained by collinear optical rectification of a high-power Yb-doped thin-disk laser i…
Single-cycle, MHz-repetition rate THz source with 66 mW of average power
Frank Meyer, Tim Vogel, Shahwar Ahmed +1
We demonstrate THz generation using the tilted pulse front method in Lithium Niobate, driven at unprecedented high average power of more than 100 W and at 13.3 MHz repetition rate,…
Efficient Spectral Broadening in the 100-W Average Power Regime Using Gas Filled Kagome HC-PCF and Pulse Compression
Florian Emaury, Clara J. Saraceno, Benoit Debord +6
We present nonlinear pulse compression of a high-power SESAM-modelocked thin-disk laser (TDL) using an Ar-filled hypocycloid-core Kagome Hollow-Core Photonic Crystal Fiber (HC-PCF)…
Gigahertz Self-referenceable Frequency Comb from a Semiconductor Disk Laser
Christian A. Zaugg, Alexander Klenner, Mario Mangold +8
We present a 1.75-GHz self-referenceable frequency comb from a vertical external-cavity surface-emitting laser (VECSEL) passively modelocked with a semiconductor saturable absorber…