Zobrazeno 1 - 10
of 207
pro vyhledávání: '"F, Fobbe"'
Autor:
Clara J. Saraceno, F. Fobbe, F. Wulf, Björn Globisch, B. Rudin, Tim Vogel, Robert B. Kohlhaas, F. Emaury
Publikováno v:
2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).
We demonstrate THz generation with state-of-the-art iron doped InGaAs photoconductive emitters using a low-noise GHz repetition rate amplified femtosecond laser operating at a central wavelength of 1560 nm. We measure a maximum dynamic range of 73 dB
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d54515ce346ad9d9b37e5326244270c5
https://doi.org/10.1109/irmmw-thz50926.2021.9567184
https://doi.org/10.1109/irmmw-thz50926.2021.9567184
Autor:
F. Fobbe, Yicheng Wang, Alan Omar, Tim Vogel, Negar Hekmat, Clara J. Saraceno, Frank Meyer, S. Mansourzadeh, Martin Hoffmann
Publikováno v:
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
We demonstrate optical rectification in GaP crystals driven by a 100 W-class thin-disk oscillator, nonlinearly compressed to sub-100 fs in a multi-pass cell. In optimized conditions, we obtain a power of 1.35 mW, which is the highest average power ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81f5dbac82140b0e109ab0621a23f6c0
https://doi.org/10.1109/irmmw-thz.2019.8874383
https://doi.org/10.1109/irmmw-thz.2019.8874383
Autor:
Frank Meyer, S. Mansourzadeh, Negar Hekmat, Tim Vogel, Alan Omar, Yicheng Wang, Martin Hoffmann, Clara J. Saraceno, F. Fobbe
Publikováno v:
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
The wide application possibilities of terahertz time domain spectroscopy (THz-TDS) has led to a rapid progress in the performance of table-top phase-stable, few-cycle THz sources, which keep setting new records in terms of bandwidth, tunability and p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f15df321308f52c432b565d56f35690e
https://doi.org/10.1109/cleoe-eqec.2019.8872938
https://doi.org/10.1109/cleoe-eqec.2019.8872938
Autor:
F. Meyer, N. Hekmat, T. Vogel, A. Omar, S. Mansourzadeh, F. Fobbe, M. Hoffmann, Y. Wang, C. J. Saraceno
Publikováno v:
Conference on Lasers and Electro-Optics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9dc3f9aae82322cce230dfd36d88a4c
https://doi.org/10.1364/cleo_at.2019.jth5a.3
https://doi.org/10.1364/cleo_at.2019.jth5a.3
Autor:
Frank Meyer, Clara J. Saraceno, Negar Hekmat, S. Mansourzadeh, Martin Hoffmann, F. Fobbe, Farhad Aslani
Publikováno v:
Optics letters. 43(24)
We demonstrate terahertz (THz) generation at megahertz repetition rate by optical rectification in GaP crystals, using excitation average power levels exceeding 100 W. The laser source is a state-of-the-art diode-pumped Yb:YAG SESAM-mode-locked thin-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d62f6a94c5d30d56b92ffdd16277e2d6
https://pubmed.ncbi.nlm.nih.gov/30547967
https://pubmed.ncbi.nlm.nih.gov/30547967
Publikováno v:
Ultrafast Bandgap Photonics III.
Progress in the performance of high-power ultrafast lasers continues to give momentum to many fields of science and technology. Nowadays, ultrafast laser systems delivering hundreds of watts of average power with pulse energies ranging from hundreds
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2989b47504040b2378963f2f1e23d063
https://doi.org/10.1117/12.2312016
https://doi.org/10.1117/12.2312016
Autor:
Dmitri R. Yakovlev, V. V. Belykh, Alexandr Dejneka, Manfred Bayer, F. Fobbe, E. Evers, Donghai Feng, D. V. Azamat, Lubomir Jastrabik
Publikováno v:
Physical Review B. 96
The spin relaxation dynamics of Ce$^{3+}$ ions in heavily cerium-doped YAG crystals is studied using pulse-electron paramagnetic resonance and time-resolved pump-probe Faraday rotation. Both techniques address the 4$f$ ground state, while pump-probe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e307a2f328101209ede2ecade640396
https://doi.org/10.1103/physrevb.96.075160
https://doi.org/10.1103/physrevb.96.075160
Autor:
Martin Hoffmann, Yicheng Wang, F. Fobbe, Clara J. Saraceno, Negar Hekmat, Alan Omar, Frank Meyer, S. Mansourzadeh, Tim Vogel
Publikováno v:
Optics Express. 27:30340
We demonstrate a high repetition-rate, single-cycle THz source with a maximum average power of 1.35 mW, operating at a center frequency of 2 THz. This result was obtained by optical rectification (OR) in GaP using an amplifier-free, nonlinearly compr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e51c90f32e6d278bdb19c67945e6a9a1
https://doi.org/10.1364/oe.27.030340
https://doi.org/10.1364/oe.27.030340
We develop an extended pump-probe Faraday rotation technique to study the submicrosecond electron spin dynamics with picosecond time resolution in a wide range of magnetic fields. The electron spin dephasing time $T_2^*$ and the longitudinal spin rel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63ac632b684ffb06945874dac4138ec1
http://arxiv.org/abs/1608.00314
http://arxiv.org/abs/1608.00314
Publikováno v:
Ultraschall in der Medizin. 13:193-198
Ultrasound contrast agents (US-CA) amplify reflected sound waves. Most substances used as contrast agents are destroyed when passing the lungs. SH U 508 is a new US-CA that can pass the lungs without impairment after peripheral intravenous applicatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c9ae2be02dee34114045a1046914c3a
https://doi.org/10.1055/s-2007-1005308
https://doi.org/10.1055/s-2007-1005308