Results 11 to 20 of about 449,684 (296)

Acousto-optic laser optical feedback imaging [PDF]

Optics Letters, 2012
We present a photon noise and diffraction limited imaging method combining the imaging laser and ultrasonic waves. The laser optical feedback imaging (LOFI) technique is an ultrasensitive imaging method for imaging objects through or embedded within a scattering medium.
Jacquin, Olivier, Glastre, Wilfried, Lacot, Eric, Hugon, Olivier, Guillet de Chatellus, Hugues, François, Ramaz   +5 more
openaire   +4 more sources

1.3 μm p-Modulation Doped InGaAs/GaAs Quantum Dot Lasers with High Speed Direct Modulation Rate and Strong Optical Feedback Resistance

Crystals, 2020
Aiming to realize high-speed optical transmitters for isolator-free telecommunication systems, 1.3 μm p-modulation doped InGaAs/GaAs quantum dot (QD) lasers with a 400 μm long cavity have been reported. Compared with the un-doped QD laser as a reference,
Xia-Yida MaXueer, Yi-Ming He, Zun-Ren Lv, Zhong-Kai Zhang, Hong-Yu Chai, Dan Lu, Xiao-Guang Yang, Tao Yang   +7 more
doaj   +1 more source

Comparison of plane mirror vs retroreflector performance for laser-self-mixing displacement sensors [PDF]

Journal of the European Optical Society-Rapid Publications, 2009
The behavior of a displacement optical sensor based on the Laser-Self-Mixing effect employing a plane mirror (PT) and a solid corner-cube (CC) as moving target is analyzed.
Ottonelli S., De Lucia F., di Vietro M., Dabbicco M., Scamarcio G.   +4 more
doaj   +1 more source

Security-Enhanced Electro-Optic Mutual Injection Secure Communication Scheme With Time-Delay Signature Suppressing

IEEE Photonics Journal, 2023
In this article, we propose and numerically demonstrate a novel dual-phase modulated time-delay signature (TDS) concealed communication system. The proposed system addresses the fatal disadvantage of conventional electro-optic chaotic systems in that TDS
Wenfu Gu, Xulin Gao, Yuehua An, Anbang Wang, Yuncai Wang, Yuwen Qin, Zhensen Gao   +6 more
doaj   +1 more source

Numerical Analysis of Nonlinear Dynamics Based on Spin-VCSELs with Optical Feedback

Photonics, 2021
In this paper, the nonlinear dynamics of a novel model based on optically pumped spin-polarized vertical-cavity surface-emitting lasers (spin-VCSELs) with optical feedback is investigated numerically.
Tingting Song, Yiyuan Xie, Yichen Ye, Bocheng Liu, Junxiong Chai, Xiao Jiang, Yanli Zheng   +6 more
doaj   +1 more source

Optical Feedback Sensitivity of a Semiconductor Ring Laser with Tunable Directionality

Photonics, 2019
We discuss the sensitivity to optical feedback of a semiconductor ring laser that is made to emit in a single-longitudinal mode by applying on-chip filtered optical feedback in one of the directional modes. The device is fabricated on a generic photonics
Guy Verschaffelt, Mulham Khoder, Guy Van der Sande   +2 more
doaj   +1 more source

Experimental investigations of Synchronization in two optically coupled chaotic systems utilizing optical feedback and optical injection [PDF]

مجلة جامعة الانبار للعلوم الصرفة, 2018
An experimentally observations of chaos synchronization have been investigated between two optically coupled laser diodes. Two schemes of optical injection, bidirectional and unidirectional optical injections have been used.
Salam K. Mousa, Qassim M.J.Abdulaziz, Kais.A. Al Naimee   +2 more
doaj   +1 more source

AC/DC: The FERMI FEL Split and Delay Optical Device for Ultrafast X-ray Science

Photonics, 2022
Free-electron lasers (FELs) are the most advanced class of light-sources, by virtue of their unique capability to lase high-brightness pulses characterized by wavelengths spanning the extreme-ultraviolet, the soft and hard X-ray spectral domains, as well
Alberto Simoncig, Michele Manfredda, Giulio Gaio, Nicola Mahne, Lorenzo Raimondi, Claudio Fava, Simone Gerusina, Riccardo Gobessi, Alessandro Abrami, Flavio Capotondi, Dario De Angelis, Ralf Hendrik Menk, Matteo Pancaldi, Emanuele Pedersoli, Marco Zangrando   +14 more
doaj   +1 more source

Optical Feedback Radiation Forces: Intracavity Optical Trapping with Feedback-locked Diode Lasers [PDF]

Frontiers in Optics 2012/Laser Science XXVIII, 2012
We demonstrate a novel mechanism for optical tweezing, where a trapped particle dynamically alters an external cavity quality factor, reduceing the average intensity and photodamage, even employing low-numerical aperture lenses and wide fields-of-view.
Y Tuna, R Sayed, MG Donato, PG Gucciardi, O Maragò, G Volpe   +5 more
openaire   +4 more sources

Effects of Power Split Ratio and Optical Delay Phase Tuning on Stabilization of Self-Mode-Locked Quantum-Dash Lasers Subject to Dual-Loop Optical Feedback

IEEE Photonics Journal, 2020
In the present work, we report a path of RF stabilization versus delay subject to self-mode-locked (SML) two-section quantum-dash (QDash) lasers emitting at ∼1.55 μm and operating at ∼21 GHz repetition rate using a feedback ...
Haroon Asghar, John G. McInerney
doaj   +1 more source