Results 61 to 70 of about 1,251,586 (168)

Fluorene‐based blue emitters: On the path to electrically pumped organic lasers

FlexMat, EarlyView.
Electrically pumped efficient operation remains unrealized, a major challenge in optoelectronics. Fluorene‐based blue‐emitting semiconductors are promising gain media, thanks to their structural tunability and favorable emission properties. This review summarizes recent advances, highlights their reliability and versatility in lasing, and outlines key ...
Yong Yan, Hao Li, Mengna Yu, Huiyin Wang, Jiangqiang He, Menghan Wu, Quanyou Feng, Linghai Xie   +7 more
wiley   +1 more source

Waveguide grating as a Bragg mirror on Bloch surface waves based platform for 2D integrated optics applications

We study and demonstrate a Bloch-surface-wave-based nano-thin waveguide grating. The waveguide grating is characterized as a Bragg mirror at telecommunication wavelengths.
Dubey, R., Herzig, H. P., Roussey, M., Lahijani, B. Vosoughi   +3 more
core   +1 more source

Selectively-pumped grating-mirror long-wavelength VCSEL

, 2009
A novel long wavelength VCSEL structure incorporating a subwavelength grating mirror, an embedded air gap and a tunnel junction is suggested.
I.-S. Chung, A. Mereuta, Syrbu, A., J. Mork, Mereuta, Alexandru, Iakovlev, V., Caliman, Andrei, Mørk, Jesper, A. Caliman, Kapon, Eli, Mereuta, A., Kapon, E., Iakovlev, Valdmir, M??rk, J., Caliman, A., V. Iakovlev, E. Kapon, A. Syrbu, Chung, Il-Sug   +18 more
core   +1 more source

Dual‐Metasurface‐Integrated Fiber Array for Bidirectional Cylindrical‐Vector‐Beam Multiplexed Communication Using Off‐Axis Spatial Manipulation

Laser &Photonics Reviews, EarlyView.
A dual‐layer metasurface is integrated on a fiber‐array facet to realize compact, plug‐and‐play free‐space optical links with cylindrical vector beam (CVB) space‐division multiplexing. An optimized off‐axis collimation layer steers multiple channels, while a Dammann vortex layer performs polarization–topology conversion for bidirectional CVB (de ...
Xipeng Lu, Jinke Li, Jin Tae Kim, Shaoyan Li, Hongliang Li, Duk‐Yong Choi, Sang‐Shin Lee   +6 more
wiley   +1 more source

Fabrication‐Tolerant GaAs/SiN Coupling Above the Loss Threshold for Quantum Photonic Applications

Laser &Photonics Reviews, EarlyView.
Reliable low‐loss optical coupling between GaAs and SiN waveguides for heterogeneous integration of single‐photon sources is demonstrated. By developing a fabrication‐aware numerical design approach and accounting for experimentally measured fabrication variations and scattering losses, coupling efficiencies meeting the < 10% loss requirement for ...
Miloš Ljubotina, Jasper De Witte, Zhe Liu, Andraž Debevc, Leonardo Midolo, Gunther Roelkens, Bart Kuyken, Dries Van Thourhout, Marko Topič, Janez Krč   +9 more
wiley   +1 more source

Plasmon–Exciton Coupling Enhances Second‐Order Nonlinear Response in Borophene–ZnO Hybrid Structures

Laser &Photonics Reviews, EarlyView.
Nonlinear interactions between plasmons in borophene and excitons in ZnO lead to enhanced nonlinear and incoherent cathodoluminescence, as well as coherent second harmonic generation, under electron‐beam and laser irradiations, respectively. The anisotropic response of borophene, revealed as in‐plane hyperbolic polariton propagation, acts as a control ...
Maximilian Black, Yaser Abdi, Prabhdeep Singh, Bharti Garg, Zahra Alavi, Mohammadreza Alikhanim, Mohammad Hosein Salemi Seresht, Fatemeh Chahshouri, Masoud Taleb, Nahid Talebi   +9 more
wiley   +1 more source

Tunable TIRF Microscopy: Simultaneous Visualization of Intracellular Dynamics at Multiple Depths

Laser &Photonics Reviews, EarlyView.
Total internal reflection fluorescence microscopy confines excitation to a thin layer, but only one depth at a time. Tunable TIRF removes this limit and assigns a different illumination depth to every region of the field of view, capturing vesicle transport and membrane dynamics simultaneously without moving mechanical parts.
Yundon Jeong, Brian Choi, Taeseong Woo, Gwan Woo Lee, Youngjin Choi, Eui‐Jin Park, Hajin Kim, Sangkyu Lee, Joo H. Kang, Jung‐Hoon Park   +9 more
wiley   +1 more source

Scanning micro spectrometer

, 2022
S.62-64Based on a MOEMS (micro opto mechanical system) scanning mirror chip with an additional grating structure on a top a spectrometer was realized, working in a scanning mode.
Schenk, H., Lakner, H.K., Wolter, A., Grüger, H., Schuster, T.   +4 more
core   +1 more source

Heterogeneous Integration of Multi‐Band Mode‐Locked and Single‐Mode Lasers on an Extended Commercial SiN Platform

Laser &Photonics Reviews, EarlyView.
Micro‐transfer printing enables GaAs and InP gain materials to be integrated on a commercial silicon nitride photonic platform. The resulting chip supports O‐ and C‐band comb and single‐mode lasers, demonstrating a scalable route toward multi‐material, multi‐wavelength, and multifunctional integrated light sources.
Dongbo Wang, Tom Reep, Thi Ngoc Lam Tran, Stijn Poelman, Jing Zhang, Jose Carreira, Camiel Op de Beeck, Stijn Cuyvers, Michael Geiselmann, Maximilien Billet, Dries Van Thourhout, Gunther Roelkens, Bart Kuyken   +12 more
wiley   +1 more source

RAPID SCANNING SPECTROMETERS OF WIDE AND OF NARROW SPECTRAL RANGE, AND THEIR APPLICATION TO THE STUDIES OF PULSED PLASMAS.

, 1967
Author Institution: Westinghouse Research LaboratoriesTwo types of rapid scanning spectrometers have been developed for application to the study of pulsed arc plasmas. The two instruments differ in the placement of the scanning mirror with respect to the
Church, Charles H.
core   +1 more source