Publications & Awards

[531] M. C. Schuchter, M. Gaulke, N. Huwyler, M. Golling, M. Guina, U. Keller
Download "Composition-controlled recovery time of SWIR (2-2.4 µm) GaSb-based SESAMs" (PDF, 3.5 MB)
Optics Express, vol. 33, No. 7, pp. 14750-14765, 2025
doi: external page 10.1364/OE.558108

[530] S. L. Camenzind, L. Lang, B. Willenberg, J. Pupeikis, H. Soghomonyan, R. Presl, P. Ray, A. Wieser, U. Keller, C. R. Phillips
Download "Long-range and dead-zone free dual-comb ranging for the interferometric tracking of moving targets" (PDF, 5.4 MB)
ACS Photonics, published online 21. March 2025
Download supporting material (PDF, 223 KB)
doi: external page 10.1021/acsphotonics.4c02199

[529] S. L. Camenzind, B. Sierro, B. Willenberg, A. Nussbaum-Lapping, A. Rampur, U. Keller, A. M. Heidt, C. R. Phillips
Download "Ultra-low noise spectral broadening of two combs in a single ANDi fiber" (PDF, 6.6 MB)
APL Photonics, vol. 10, 036119, 2025
doi: external page doi.org/10.1063/5.0251190

[528] E. W. de Vos, S. Neb, M. Hollm, F. Burri, L. Gallmann, U. Keller
Download "Hot-electron-induced substrate response in transient absorption spectroscopy of tantalum" (PDF, 3.7 MB)
Optics Express, vol. 33, No. 5, pp. 9707-9714, 2025
doi: external page 10.1364/OE.551479

[527] S. L. Camenzind, A. Nussbaum-Lapping, B. Willenberg, J. Pupeikis, J. Taher, T. Hakala, A. Kukko, J. Hyyppä, P. Ray, C. R. Phillips, U. Keller
Download "Broadband hyperspectral LiDAR with a free-running gigahertz dual-comb supercontinuum" (PDF, 2.9 MB) 
Optics Letters, vol. 50, No. 4, pp. 1289-1292, 2025
doi: external page 10.1364/OL.550505

[526] M. Gaulke, M. C. Schuchter, N. Huwyler, M. Golling, B. Willenberg, C. R. Phillips, U. Keller
Download "Optically pumped GaSb-based thin-disk laser design considerations for cw and dual-comb operation at a center wavelength around 2 µm" (PDF, 3 MB) – Invited Paper
IEEE J. Selected Topics in Quantum Electronics (JSTQE), vol. 31, No. 2, 1501814, 2024
doi: external page 10.1109/JSTQE.2024.3454521

[525] C. Gruber, J. Pupeikis, S. L. Camenzind, B. Willenberg, F. V. A. Camargo, L. Lang, P. Hamm, A. Rampur, A. Heidt, C. R. Phillips, G. Cerullo, U. Keller
Download "High-sensitivity pump-probe spectroscopy with a dual-comb laser and a PM-ANDi Supercontinuum" (PDF, 2.9 MB)
Optics Lett., vol. 49, No. 22, pp. 6445-6448, 2024
doi: external page 10.1364/OL.538105

[524] C. M. González-Collado,L. Cattaneo, E. Plésiat, J. J. Omiste, J. Vos, J. González-Vázquez, P. Decleva, U. Keller, A. Palacios, F. Martín
Download "Orientation-resolved attosecond photoionization delays in the N2O molecule" (PDF, 2.6 MB)
Phys. Rev. Research, vol. 6, 033342 (2024)
doi: external page 10.1103/PhysRevResearch.6.033342
Supplementary material: Download download (PDF, 1.6 MB)

[523] Moritz Seidel, Lukas Lang, Christopher R. Phillips, and Ursula Keller
Download "Ultrafast 550-W average-power thin-disk laser oscillator" (PDF, 8 MB)
Optica, vol. 11, pp. 1368-1375 (2024)
doi: external page 10.1364/OPTICA.529185

[522] C. P. Bauer, Z. A. Bejm, M. K. Bollier, J. Pupeikis, B. Willenberg, U. Keller, C. R. Phillips
Download "High-sensitivity dual-comb and cross-comb spectroscopy across the infrared using a widely tunable and free-running optical parametric oscillator" (PDF, 3.3 MB)
Nature Communications, vol. 15, 7211, 2024
Supplementary material: Download download (PDF, 2.2 MB)
doi: external page 10.1038/s41467-024-51392-9

[521] B. Zhang, C. Phillips, E. V. Araujo, S. Iskander-Rizk, J. Pupeikis, B. Willenberg, U. Keller, N. Bhattacharya
Download "Study of time-resolved dynamics in turbid medium using a single-cavity dual-comb" (PDF, 5.5 MB)
ACS Photonics, vol. 11, No. 10, pp. 3972-3981, 2024
doi: external page 10.1021/acsphotonics.4c00254

[22Aug24] Published online 22. Aug. 2024, external page doi.org/10.1038/s41467-024-51392-9

[520] B. Willenberg, C. R. Phillips, J. Pupeikis, S. L. Camenzind, L. Liebermeister, R. B. Kohlhass, B. Globisch, U. Keller
Download "THz-TDS with gigahertz Yb-based dual-comb lasers: noise analysis and mitigation strategies" (PDF, 998 KB) 
Applied Optics, vol. 63, No. 15, pp. 4144-4156, 2024
doi: external page 10.1364/AO.522802

[519] A. Tyazhev, J. E. Bae, M. Gaulke, P. Loiko, J. Heidrich, M. Golling, S. Idlahcen, L. Guillemot, T. Godin, P. Camy, U. Keller, A. Hideur
Download "Upconversion-pumped femtosecond thulium laser at 2309 nm mode-locked by a GaSb-based SESAM" (PDF, 4.5 MB)
Optics Express, vol. 32, No. 9, pp. 15093-15105, 2024
doi: external page 10.1364/OE.516958

[518] W. Lu, Z. Zhu, B. Willenberg, J. Pupeikis, C. R. Phillips, U. Keller, S. C. Chen
Download "Scan-less 3D microscopy based on spatiotemporal encoding on a single-cavity dual-comb laser" (PDF, 4.2 MB)
Optics Letters, vol. 49, No. 7, pp. 1766 – 1769, 2024
Supplementary material: Download download (PDF, 938 KB)
doi: external page 10.1364/OL.507661

[517] M. C. Schuchter, N. Huwyler, M. Golling, M. Gaulke, U. Keller
Download "2-µm 1.5-W optically pumped semiconductor membrane laser" (PDF, 3.2 MB) 
IEEE Photonics Tech. Lett., vol. 36, No. 8, pp. 543-546, 2024
doi: external page 10.1109/LPT.2024.3377261

[516] M. Gaulke, J. Heidrich, N. Huwyler, M. Schuchter, M. Golling, B. Willenberg, A. Barh, U. Keller
Download "Gigahertz semiconductor laser at a center wavelength of 2 µm in single and dual-comb operation" (PDF, 7.8 MB) 
Optics Express, vol. 32, No. 1, pp. 26-39, 2024
doi: external page 10.1364/OE.503035

[515] E. W. de Vos, S. Neb, A. Niedermayr, F. Burri, M. Hollm, L. Gallmann, U. Keller
Download "Ultrafast transition from state-blocking dynamics to electron localization in transition metal -tungsten" (PDF, 1.9 MB)
Phys. Rev. Lett., vol. 131, 226901, 2023
doi: external page 10.1103/PhysRevLett.131.226901
Supplementary material: Download download (PDF, 2.8 MB)

[514] N. Boivin, S. Täuber, U. Beisiegel, U. Keller, J. G. Hering
Download "Sexism in academia is bad for science and a waste of public funding" (PDF, 866 KB) 
Nature Rev. Mater. (2023) – published online 27. Nov. 2023
doi: external page 10.1038/s41578-023-00624-3
Supplementary material: Download download (PDF, 636 KB)

[513] N. Boivin, S. Täuber, U. Keller
Download "Nobel win: spotlight on attrition of women in science" (PDF, 57 KB) 
Nature, vol. 623, 253, 2023
doi: external page 10.1038/d41586-023-03459-8

[512] M. Seidel, J. Pilat, L. Lang, C. R. Phillips, U. Keller
Download "Ultrafast Yb:YAG laser oscillator with gigahertz repetition rate" (PDF, 2.8 MB) 
Optics Express, vol. 31, No. 21, pp. 34313-34324, 2023
doi: external page 10.1364/OE.503697

[511] N. Jornod, M. Jankowski, L. M. Krüger, V. J. Wittwer, N. Modsching, C. Langrock, C. R. Phillips, U. Keller, T. Südmeyer, M. M. Fejer
Download "Monolithically integrated femtosecond optical parametric oscillators" (PDF, 14 MB) 
Optica, vol. 10, No. 7, pp. 826-831, 2023
doi: external page 10.1364/OPTICA.490166

[510] T. Flöry, V. Stummer, J. Pupeikis, B. Willenberg, A. Nussbaum-Lapping, E. Kaksis, F. V. A. Camarago, M. Barkauskas, C. R. Phillips, U. Keller, G. Cerullo, A. Pugzlys, A. Baltuska
Download "Rapid-scan nonlinear time-resolved spectroscopy over arbitrary delay intervals" (PDF, 1.6 MB) 
Ultrafast Science, 3, 0027, 2023
doi: external page 10.34133/ultrafastscience.0027
Supporting information: Download download (PDF, 239 KB)

[509] M. Volkov, S. A. Sato, A. Niedermayr, A. Rubio, L. Gallmann, U. Keller
Download "Floquet-Bloch resonances in near-petahertz electroabsorption spectroscopy of SiO₂" (PDF, 2.8 MB) 
Phys. Rev. B, vol. 107, 184304, 2023
doi: external page 10.1103/PhysRevB.107.184304

[508] Z. Schumacher, S. A. Sato, S. Neb, A. Niedermayr, L. Gallmann, A. Rubio, U. Keller
Download "Ultrafast electron localization and screening in a transition metal dichalcogenide" (PDF, 1.4 MB) 
PNAS, vol. 120, No. 15, e2221725120, 2023
doi: external page 10.1073/pnas.2221725120 
Supporting information: Download download (PDF, 868 KB)

[507] N. Huwyler, M. Gaulke, J. Heidrich, M. Golling, A. Barh, U. Keller 
Download "3-W output power from a 2-µm InGaSb VECSEL using a hybrid metal-semiconductor Bragg reflector" (PDF, 4.2 MB) 
Optical Materials Express, vol. 13, No. 3, pp. 833-842, 2023 
doi: external page 10.1364/OME.485694

[506] C. R. Phillips, B. Willenberg, A. Nussbaum-Lapping, F. Callegari, S. L. Camenzind, J. Pupeikis, U. Keller
Download "Coherently averaged dual-comb spectroscopy with a low-noise and high-power free-running gigahertz dual-comb laser" (PDF, 3.1 MB) 
Optics Express, vol. 31, No. 5, pp. 7103-7119, 2023
doi: external page 10.1364/OE.479356
Erratum: Download download (PDF, 2.2 MB)

[505] A. Barh, A. Nussbaum-Lapping, J. Heidrich, M. Gaulke, M. Golling, C. R. Phillips, U. Keller 
Download "Single-cavity dual-modelocked 2.36-µm laser" (PDF, 2.9 MB) 
Optics Express, vol. 31, No. 4, pp. 6475-6482, 2023
doi: external page 10.1364/OE.481789

[504] S. L. Camenzind, T. Sevim, B. Willenberg, J. Pupeikis, A. Nussbaum-Lapping, C. R. Phillips, U. Keller 
Download "Free-running Yb:KYW dual-comb oscillator in a MOPA architecture" (PDF, 2.8 MB) 
Optics Express, vol. 31, No. 4, pp. 6633-6648, 2023
doi: external page 10.1364/OE.482747

[503] J. Heidrich, A. Barh, S. L. Camenzind, B. Willenberg, M. Gaulke, M. Golling, C. R. Phillips, U. Keller
Download "Low-noise femtosecond SESAM modelocked diode-pumped Cr:ZnS oscillator" (PDF, 7.1 MB)
IEEE Journal of Quantum Electronics, vol. 59, No. 1, 1300107, 2023 (published online Jan. 13, 2023, external page Link)
doi: external page 10.1109/JQE.2023.3236399