Results 11 to 20 of about 659 (179)

Reducing the Threshold of Organic Polariton Lasers by Active Layer Micropatterning and Lateral Confinement

Small Structures
Vertical‐cavity surface‐emitting lasers (VCSELs) are vital for modern photonics, offering compactness, low thresholds, and ease of integration. Pushing them to wavelength‐scale dimensions, however, introduces fabrication and performance challenges ...
Julia Witt, Jiwoo Oh, Tommaso Marcato, Andreas Mischok, Chih‐Jen Shih, Malte C. Gather   +5 more
doaj   +2 more sources

Wafer Scale III-Nitride Deep-Ultraviolet Vertical-Cavity Surface-Emitting Lasers Featuring Nanometer-Class Control of Cavity Length. [PDF]

Adv Sci (Weinh)
A DUV‐VCSEL strategy featuring the nanometer‐class control of the cavity length is proposed in the DUV optoelectronic framework based on GaN templates. After the sapphire removal, a self‐terminated etching technology is developed, whereby the cavity length can be accurately determined by epitaxy instead of the fabrication process. As such, a record low
Ji C, Wang J, Xu F, Zhang L, Lang J, Zhang Z, Tan F, Ji C, Zhang J, Zhang E, Kang X, Qin Z, Ju G, Wu J, Yang X, Tang N, Wang X, Ge W, Shen B.   +18 more
europepmc   +2 more sources

Chaotic-cavity surface-emitting lasers for optical wireless communication and low-speckle illumination

APL Photonics, 2023
Though necessary and advantageous in many fields, the high coherence of lasers is detrimental to their performance in certain applications, including illumination, imaging, and projection.
Omar Alkhazragi, Ming Dong, Liang Chen, Meiwei Kong, Georgian Melinte, Dong Liang, Tien Khee Ng, Junping Zhang, Hakan Bagci, Boon S. Ooi   +9 more
doaj   +1 more source

A Simple Method to Build High Power PCSEL Array with Isolation Pattern Design

Crystals, 2022
Photonic crystal surface-emitting lasers (PCSELs) hold promising properties of both edge emitting lasers (EELs) and vertical-cavity surface-emitting lasers (VCSELs). They possess high output power while radiating light vertically, being thought of as the
Chia-Jui Chang, Lih-Ren Chen, Kuo-Bin Hong, Wei-Chih Weng, Bing-Hong Chuang, Hao-Chung Kuo, Tien-Chang Lu   +6 more
doaj   +1 more source

Emerging Device Applications From Strong Light-Matter Interactions in 2D Materials. [PDF]

Adv Sci (Weinh)
Two‐dimensional semiconductors enable extremely compact optoelectronic devices such as solar cells, sensors, LEDs, and lasers. Their strong light–matter interactions allow efficient light emission, detection, and energy conversion. This review article discusses the recent progress in integrating these materials with optical cavities and nanostructures ...
Archana K J, Shwetabh K, Ali R, Velayutham R, Das K, Mondal A, Kumar P, Anantharaman SB.   +7 more
europepmc   +2 more sources

Long-Wavelength VCSELs: Status and Prospects

Photonics, 2023
Single-mode long-wavelength (LW) vertical-cavity surface-emitting lasers (VCSELs) present an inexpensive alternative to DFB-lasers for data communication in next-generation giga data centers, where optical links with large transmission distances are ...
Andrey Babichev, Sergey Blokhin, Evgenii Kolodeznyi, Leonid Karachinsky, Innokenty Novikov, Anton Egorov, Si-Cong Tian, Dieter Bimberg   +7 more
doaj   +1 more source

Low-threshold wavelength-tunable ultraviolet vertical-cavity surface-emitting lasers from 376 to 409 nm

Fundamental Research, 2021
Optically pumped wavelength-tunable vertical-cavity surface-emitting lasers (VCSELs) operating in the ultraviolet A (UVA) spectrum were demonstrated. The VCSELs feature double dielectric distributed brag reflectors and a wedge-shaped cavity fabricated ...
Yang Mei, Tian-Rui Yang, Wei Ou, Zhong-Ming Zheng, Hao Long, Lei-Ying Ying, Bao-Ping Zhang   +6 more
doaj   +1 more source

Contact Geometrical Study for Top Emitting 980 nm InGaAs/GaAsP Vertical-Cavity Surface Emitting Lasers

ARO-The Scientific Journal of Koya University, 2021
Geometrical contacts of a double mesa structure with 16 rows ×15 columns arrays of top emitting GaAs based 980 nm vertical cavity surface emitting lasers (VCSELs) are fabricated and characterized.
Faten A. Chaqmaqchee
doaj   +1 more source

Annealing effects of 850 nm vertical-cavity surface-emitting lasers after proton irradiation

Heliyon, 2022
A long-term annealing experiment was performed using 850 nm vertical-cavity surface-emitting lasers (VCSELs) irradiated with 10 MeV protons. Static parameters such as the threshold current, slope efficiency, and light output power were tested using ...
Jiawei Chen, Yudong Li, Heini Maliya, Qi Guo, Dong Zhou, Lin Wen   +5 more
doaj   +1 more source

Equivalent Circuit Model of High-Performance VCSELs

Photonics, 2020
In this work, a general equivalent circuit model based on the carrier reservoir splitting approach in high-performance multi-mode vertical-cavity surface-emitting lasers (VCSELs) is presented.
Marwan Bou Sanayeh, Wissam Hamad, Werner Hofmann   +2 more
doaj   +1 more source