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Cavity optomechanics explores the coupling between the optical field and the mechanical oscillation to induce cooling and regenerative oscillation in a mechanical oscillator. So far, optomechanics relies on the detuning between the cavity…

In this paper, we demonstrate a laser-based optical wireless communication (OWC) system employing a 940 nm single-mode (SM) vertical cavity surface emitting laser (VCSEL) and a multi-mode (MM) fiber-coupled receiver, achieving a record data…

Signal Processing · Electrical Eng. & Systems 2025-10-07 Hossein Kazemi , Isaac N. O. Osahon , Nikolay Ledentsov , Ilya Titkov , Nikolay Ledentsov , Harald Haas

We report on a solid-state laser structure being the organic counterpart of the Vertical External-Cavity Surface-Emitting Laser (VECSEL) design. The gain medium is a poly (methyl methacrylate) film doped with Rhodamine 640, spin-casted onto…

We show experimentally and theoretically that an electrically biased $200\,\mu$m multi-transverse mode Vertical-Cavity Surface-Emitting Laser can be passively mode-locked using optical feedback from a distant Resonant Saturable Absorber…

Optics · Physics 2014-07-02 M. Marconi , J. Javaloyes , S. Balle , M. Giudici

The generation of optical pulses at ultra low bias level, thus low energy cost, is explored in a commercial microcavity semiconductor laser in view of testing the principle of energy efficient information encoding in potential integrated…

Optics · Physics 2019-03-27 Tao Wang , Gaofeng Wang , Gian Piero Puccioni , Gian Luca Lippi

Single-cavity dual-comb lasers are a new class of ultrafast lasers which have a wide possible application space including pump-probe sampling, optical ranging, and gas absorption spectroscopy. However, to this date laser cavity multiplexing…

The ability to process and act on data in real time is increasingly critical for applications ranging from autonomous vehicles, three-dimensional environmental sensing and remote robotics. However, the deployment of deep neural networks…

We present a 1.75-GHz self-referenceable frequency comb from a vertical external-cavity surface-emitting laser (VECSEL) passively modelocked with a semiconductor saturable absorber mirror (SESAM). The VECSEL delivers 231-fs pulses with an…

We demonstrate a compact two-chip terahertz-emitting vertical-external-cavity surface-emitting laser (TECSEL) source, which provides 1-THz output based on intracavity frequency conversion of dual-wavelength emission in a periodically-poled…

Real-time transmission of high-resolution video signals in an uncompressed and unencrypted format requires an ultra-reliable and low-latency communications (URLLC) medium with high bandwidth to maintain the quality of experience (QoE) for…

Signal Processing · Electrical Eng. & Systems 2025-08-01 Hossein Kazemi , Isaac N. O. Osahon , Tiankuo Jiao , David Butler , Nikolay Ledentsov , Ilya Titkov , Nikolay Ledentsov , Harald Haas

Cavity combiners have been put forward for high power combining due to their advantages of larger combining ability, variable input channels and less power loss. For a high power cavity combiner, it is better to keep the power loss ratio in…

Accelerator Physics · Physics 2016-10-04 Yongtao Liu , Guirong Huang , Lei Shang , Hongxiang Lin , Baiting Du

We demonstrate harmonic mode-locking in a semiconductor VCSEL using polarization-controlled delayed feedback. By integrating a rotatable $\lambda$/2-plate within an external cavity, we achieve precise control over pulse multiplicity and…

Optics · Physics 2025-06-19 T. Wang , Y. Ma , Z. Li , Y. Li , Z. Tu , Y. Zhang , G. Xu , S. Baland , S. Xiang , Y. Hao

The full quantum-statistical theory of the Vertical-Cavity Surface-Emitting Laser (VCSEL) in the form of the Langevin equations is constructed for arbitrary relations between the frequency parameters. The same theoretical treatment as in…

Quantum Physics · Physics 2013-12-24 Yu. M. Golubev , T. Yu. Golubeva , E. Giacobino

Vision Transformers (ViTs) have established new performance benchmarks in vision tasks such as image recognition and object detection. However, these advancements come with significant demands for memory and computational resources,…

Hardware Architecture · Computer Science 2026-02-10 Cong Wang , Zexin Fu , Jiayi Huang , Shanshi Huang

Silicon-based terahertz quantum cascade lasers (QCLs) offer potential advantages over existing III-V devices. Although coherent electron transport effects are known to be important in QCLs, they have never been considered in Si-based device…

Mesoscale and Nanoscale Physics · Physics 2012-06-13 T. V. Dinh , A. Valavanis , L. J. M. Lever , Z. Ikonić , R. W. Kelsall

A low-cost single frequency laser emitting in the mid-infrared spectral region and dissipating minimal electrical power is a key ingredient for the next generation of portable gas sensors for high-volume applications involving chemical…

Deep convolutional neural networks (ConvNets) of 3-dimensional kernels allow joint modeling of spatiotemporal features. These networks have improved performance of video and volumetric image analysis, but have been limited in size due to…

Computer Vision and Pattern Recognition · Computer Science 2017-06-13 David Budden , Alexander Matveev , Shibani Santurkar , Shraman Ray Chaudhuri , Nir Shavit

Membrane external-cavity surface-emitting lasers (MECSELs) are at the forefront of pushing the performance limits of vertically emitting semiconductor lasers. Their simple idea of using just a very thin (hundreds of nanometers to few…

Vertical cavity Surface Emitting Laser (VCSEL) diodes emit light in two polarization modes. The amount of optical feedback is found to influence the intensities of the emitted modes. We investigate the effect of the amount of total output…

Optics · Physics 2015-09-24 Sajeev Damodarakurup , Ram Soorat , Ashok Vudayagiri

Optical wireless communication provides data transmission at high speeds which can satisfy the increasing demands for connecting a massive number of devices to the Internet. In this paper, vertical-cavity surface-emitting(VCSEL) lasers are…

Signal Processing · Electrical Eng. & Systems 2021-11-30 Ahmad Adnan Qidan , Maximo Morales-Cespedes , Taisir El-Gorashi , Jaafar M. H. Elmirghani