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The appeal of lasers can be attributed to both their ubiquitous applications and their role as model systems for elucidating nonequilibrium and cooperative phenomena. Introducing novel concepts in lasers thus has a potential for both…

Mesoscale and Nanoscale Physics · Physics 2019-04-15 Markus Lindemann , Gaofeng Xu , Tobias Pusch , Rainer Michalzik , Martin R. Hofmann , Igor Žutić , Nils C. Gerhardt

In the field of spin-controlled semiconductor lasers, massive effort has been focused upon materials with long spin relaxation times (~ns). In contrast, we demonstrate room-temperature spin-polarized ultrafast pulsed lasing in InGaAs…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 Feng-kuo Hsu , Yi-Shan Lee , Sheng-Di Lin , Chih-Wei Lai

Solution-processed organic-inorganic lead halide perovskites have recently emerged as promising gain media for tunable semiconductor lasers, and have come to rival inorganic III-V group semiconductors as the material candidate for…

Plasmons in heavily doped semiconductor layers are optically active excitations with sharp resonances in the 5-15 um wavelength region set by the doping level and the effective mass. Here we demonstrate that volume plasmons can form in…

Mesoscale and Nanoscale Physics · Physics 2020-07-27 Angela Vasanelli , Yanko Todorov , Baptiste Dailly , Sébastien Cosme , Djamal Gacemi , Andrew Haky , Isabelle Sagnes , Carlo Sirtori

Remarkable systems have been reported recently using the polylithic integration of semiconductor optoelectronic devices and plasmonic materials exhibiting epsilon-near-zero (ENZ) and negative permittivity. In traditional noble metals, the…

Spectral imaging and detection of mid-infrared (mid-IR) wavelengths are emerging as an enabling technology of great technical and scientific interest; primarily because important chemical compounds display unique and strong mid-IR spectral…

We present optical Thomson scattering measurements of electron density and temperature in a large-scale (~2 cm) exploding laser plasma produced by irradiating a solid target with a high energy (5-10 J) laser pulse at high repetition rate (1…

We experimentally demonstrate thermo-optic locking of a semiconductor laser to an integrated toroidal optical microresonator. The lock is maintained for time periods exceeding twelve hours, without requiring any electronic control systems.…

Optics · Physics 2015-05-14 T. G. McRae , K. H. Lee , M. McGovern , D. Gwyther , W. P. Bowen

Semiconductor lasers with ultra-low thresholds and minimal footprints are a topic of active research. Such devices require a combination of high quality factor laser cavities with small active region volumes, which drives the quest for…

We report a room-temperature diode-pumped solid-state laser by water immersion cooling, which delivers a pulse energy of 11 J at the repetition rate of 100 Hz and the pulse duration of 7 ns, while the beam quality factor is 2.6 times the…

Optics · Physics 2026-01-08 Xinxing Lei , Suyang Wang , Zichao Wang , Lei Huang , Qiang Liu , Xing Fu

We review the recent developments of the polariton physics in microcavities featuring the exciton-photon strong coupling at room-temperature, and leading to the achievement of room-temperature polariton condensates. Such cavities embed…

Mesoscale and Nanoscale Physics · Physics 2016-09-21 Thierry Guillet , Christelle Brimont

Controlling light-matter interactions in solid-state systems has motivated intense research to produce bosonic quasi-particles known as exciton-polaritons, which requires strong coupling between excitons and cavity photons. Ultra-low…

Applications relying on mid-infrared radiation (Mid-IR, $\lambda\sim$ 3-30 $\mu$m) have progressed at a very rapid pace in recent years, stimulated by scientific and technological breakthroughs. Mid-IR cameras have propelled the field of…

We design and fabricate large-area (1.1 mm $\times$ 1.1 mm) photonic crystal quantum cascade lasers, enabling single-mode (wavelength $\sim$ 8.5 $\mu$m) surface emission at room temperature, with a maximum peak power up to 176 mW. The beam…

Photothermal heating represents a major constraint that limits the performance of many nanoscale optoelectronic and optomechanical devices including nanolasers, quantum optomechanical resonators, and integrated photonic circuits. Although…

Applied Physics · Physics 2020-07-15 Anupum Pant , Xiaojing Xia , E. James Davis , Peter J. Pauzauskie

Room temperature operation is mandatory for any optoelectronics technology which aims to provide low-cost compact systems for widespread applications. In recent years, an important technological effort in this direction has been made in…

The back-action damping of mechanical motion by electromagnetic radiation is typically overwhelmed by internal loss channels unless demanding experimental ingredients such as superconducting resonators, high-quality optical cavities, or…

Mesoscale and Nanoscale Physics · Physics 2025-01-31 Denise Puglia , Rachel Odessey , Peter S. Burns , Niklas Luhmann , Silvan Schmid , Andrew P. Higginbotham

The demand for single photon sources at $\lambda~=~1.54~\mu$m, which follows from the consistent development of quantum networks based on commercial optical fibers, makes Er:O$_x$ centers in Si still a viable resource thanks to the optical…

Thermal radiation is an abundant form of incoherent light. Generating coherent infrared light through incandescence promises a cheap alternative to the costly and epitaxially complex quantum cascade laser, however it remains a fundamental…

We investigate laser cooling of an ensemble of atoms in an optical cavity. We demonstrate that when atomic dipoles are sychronized in the regime of steady-state superradiance, the motion of the atoms may be subject to a giant frictional…

Quantum Physics · Physics 2016-04-20 Minghui Xu , Simon B. Jäger , S. Schütz , J. Cooper , Giovanna Morigi , M. J. Holland
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