Results 21 to 30 of about 308,960 (294)

Chirped gratings in integrated optics [PDF]

open access: yes, 1977
Gratings with variable periods (chirped gratings) have been fabricated by recording the interference pattern of a collimated laser beam with a converging beam generated by a cylindrical lens.
Katzir, A.   +3 more
core   +1 more source

Periodic structures for integrated optics [PDF]

open access: yes, 1977
This paper deals with the theory and device applications of periodic thin-film waveguides. Topics treated include mode solutions, optical filters, distributed feedback lasers (DFB), distributed Bragg reflector (DBR) lasers, grating couplers, and phase ...
Nakamura, Michiharu, Yariv, Amnon
core   +1 more source

Bound states in the continuum (BIC) accompanied by avoided crossings in leaky-mode photonic lattices

open access: yesNanophotonics, 2020
When two nonorthogonal resonances are coupled to the same radiation channel, avoided crossing arises and a bound state in the continuum (BIC) appears with appropriate conditions in parametric space. This paper presents numerical and analytical results on
Lee Sun-Goo, Kim Seong-Han, Kee Chul-Sik
doaj   +1 more source

A two-channel, spectrally degenerate polarization entangled source on chip

open access: yesnpj Quantum Information, 2017
Quantum Information: the realization of integrated entangled photons sources In the context of quantum technology, integrated photonic devices demonstrated great potential to perform quantum tasks stably with ease.
Linda Sansoni   +6 more
doaj   +1 more source

Cross-polarized photon-pair generation and bi-chromatically pumped optical parametric oscillation on a chip [PDF]

open access: yes, 2015
Nonlinear optical processes are one of the most important tools in modern optics with a broad spectrum of applications in, for example, frequency conversion, spectroscopy, signal processing and quantum optics.
A Pasquazi   +32 more
core   +3 more sources

Highly efficient frequency conversion with bandwidth compression of quantum light

open access: yesNature Communications, 2017
In quantum information technology the output of one element often does not match the required frequency and bandwidth of the input of the next element. Here, Allgaieret al.
Markus Allgaier   +8 more
doaj   +1 more source

Indirect overgrowth as a synthesis route for superior diamond nano sensors

open access: yesScientific Reports, 2020
The negatively charged nitrogen-vacancy ( $$\hbox {NV}^{-}$$ NV - ) center shows excellent spin properties and sensing capabilities on the nanoscale even at room temperature.
Christoph Findler   +4 more
doaj   +1 more source

Orthogonally Polarized Dual-Wavelength Gain-Switched Ho:LuLiF4 Pulse Laser

open access: yesPhotonics, 2023
A compact, orthogonally polarized, gain-switched a-cut Ho:LuLiF4 laser with intra-cavity pumping by a self-Q-switched Tm:YAP laser is demonstrated here for the first time.
Guanqu Hu   +7 more
doaj   +1 more source

Direct generation of genuine single-longitudinal-mode narrowband photon pairs

open access: yesNew Journal of Physics, 2015
The practical prospect of quantum communication and information processing relies on sophisticated single-photon pairs, which feature a controllable waveform, narrow spectrum, excellent purity, fiber compatibility, and miniaturized design.
Kai-Hong Luo   +8 more
doaj   +1 more source

All-fiber probing of aluminized RDX particle micro-explosion

open access: yesFrontiers in Physics, 2023
Investigating the thermal decomposition characteristics and mechanisms of nano- and submicron-aluminized 1,3,5-trinitro-1,3,5-triazine (RDX) is essential to optimize the formulations and improve combustion/detonation efficiencies.
Yu Zhang   +8 more
doaj   +1 more source

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