Zobrazeno 1 - 10
of 487
pro vyhledávání: '"Schreiber, Thomas"'
Autor:
Gong, Jingyu, Nie, Yi, van Ouwerkerk, Jonas, Wege, Felix, Cortés, Mauricio Celi, von Oy, Christoph, Brucksch, Jonas, Bußar, Christian, Schreiber, Thomas, Sauer, Dirk Uwe, Müller, Dirk, Monti, Antonello
Decarbonizing the energy sector is one of the main challenges to combat the climate crisis. Cities play an important role to reach climate neutrality as more than 70% of global CO2 emissions originate from urban areas. Decarbonization of energy suppl
Externí odkaz:
http://arxiv.org/abs/2304.07150
Autor:
Topper, Brian, Peysokhan, Mostafa, Albrecht, Alexander R., Flores, Angel S., Kuhn, Stefan, Haessner, Denny, Hein, Sigrun, Hupel, Christian, Nold, Johannes, Haarlammert, Nicoletta, Schreiber, Thomas, Sheik-Bahae, Mansoor, Mafi, Arash
A ytterbium doped silica optical fiber has been cooled by 18.4K below ambient temperature by pumping with 20W of 1035nm light in vacuum. In air, cooling by 3.6K below ambient was observed with the same 20W pump. The temperatures were measured with a
Externí odkaz:
http://arxiv.org/abs/2109.13872
Autor:
Beier, Franz, Moeller, Friedrich, Sattler, Bettina, Nold, Johannes, Liem, Andreas, Hupel, Christian, Kuhn, Stefan, Hein, Sigrun, Haarlammert, Nicoletta, Schreiber, Thomas, Eberhardt, Ramona, Tuennermann, Andreas
Publikováno v:
Opt. Lett. 43, 1291-1294 (2018)
In this contribution we investigate the transversal mode instability behavior of an ytterbium doped commercial 20/400 fiber and obtain 2.9 kW of output power after optimizing the influencing parameters. In this context, we evaluate the influence of t
Externí odkaz:
http://arxiv.org/abs/2101.12613
Publikováno v:
Opt. Lett. 41, 2632-2635 (2016)
We report on a monolithic thulium fiber laser with 567 W output power at 1970 nm, which is the highest power reported so far directly from a thulium oscillator. This is achieved by optimization of the splice parameters for the active fiber (minimizin
Externí odkaz:
http://arxiv.org/abs/2101.12587
Autor:
Beier, Franz, Plötner, Marco, Sattler, Bettina, Stutzki, Fabian, Walbaum, Till, Liem, Andreas, Haarlammert, Nicoletta, Schreiber, Thomas, Eberhardt, Ramona, Tünnermann, Andreas
Publikováno v:
Opt. Lett. 42, 4311-4314 (2017)
We report on detailed in-situ distributed temperature measurements inside a high power fiber amplifier. The deducted thermal load and the TMI-threshold of a commercial LMA fiber with 25 micron core and 400 micron cladding was measured at various seed
Externí odkaz:
http://arxiv.org/abs/2101.12567
Laser-induced anti-Stokes fluorescence cooling of ytterbium-doped silica glass by more than 6 Kelvin
Autor:
Peysokhan, Mostafa, Rostami, Saeid, Mobini, Esmaeil, Albrecht, Alexander R., Kuhn, Stefan, Hein, Sigrun, Hupel, Christian, Nold, Johannes, Haarlammert, Nicoletta, Schreiber, Thomas, Eberhardt, Ramona, Flores, Angel S., Tünnermann, Andreas, Sheik-Bahae, Mansoor, Mafi, Arash
Laser cooling of a solid is achieved when a coherent laser illuminates the material, and the heat is extracted by resulting anti-Stokes fluorescence. Over the past year, net solid-state laser cooling was successfully demonstrated for the first time i
Externí odkaz:
http://arxiv.org/abs/2011.11224
Fiber lasers entered numerous applications due to their high efficiency and superior stability. Particularly in space, those lasers have to fulfill additional requirements set by the harsh environment, typically characterized by large temperature gra
Externí odkaz:
http://arxiv.org/abs/1910.11562
Autor:
Mobini, Esmaeil, Rostami, Saeid, Peysokhan, Mostafa, Albrecht, Alexander, Kuhn, Stefan, Hein, Sigrun, Hupel, Christian, Nold, Johannes, Haarlammert, Nicoletta, Schreiber, Thomas, Eberhardt, Ramona, Tunnermann, Andreas, Sheik-Bahae, Mansoor, Mafi, Arash
Publikováno v:
Commun Phys 3, 134 (2020)
Laser cooling of a solid is achieved when a coherent laser illuminates the material in the red tail of its absorption spectrum, and the heat is carried out by anti-Stokes fluorescence of the blue-shifted photons. Solid-state laser cooling has been su
Externí odkaz:
http://arxiv.org/abs/1910.10609
Autor:
Popp, Alexandra, Distler, Victor, Jaksch, Kevin, Sedlmeir, Florian, Müller, Christian R., Haarlammert, Nicoletta, Schreiber, Thomas, Marquardt, Christoph, Tünnermann, Andreas, Leuchs, Gerd
Publikováno v:
Appl. Phys. B 126, 130 (2020)
We investigate the frequency-resolved intensity noise spectrum of an Yb-doped fiber amplifier down to the fundamental limit of quantum noise. We focus on the kHz and low MHz frequency regime with special interest in the region between 1 and 10 kHz. I
Externí odkaz:
http://arxiv.org/abs/1908.00756
Publikováno v:
In Energy & Buildings 1 April 2023 284
