A5033213824- Semiconductor Lasers and Optical Devices
- Underwater Vehicles and Communication Systems
- Optical Wireless Communication Technologies
- Atmospheric aerosols and clouds
- Atmospheric and Environmental Gas Dynamics
- GaN-based semiconductor devices and materials
- Atmospheric Ozone and Climate
- Optical and Acousto-Optic Technologies
- Photonic and Optical Devices
- Marine and coastal ecosystems
- Atmospheric chemistry and aerosols
- Spectroscopy and Laser Applications
- Advanced Fiber Laser Technologies
- Infrared Target Detection Methodologies
- Analytical Chemistry and Sensors
- Plant Virus Research Studies
- Acoustic Wave Resonator Technologies
- Advanced Fiber Optic Sensors
- Semiconductor Quantum Structures and Devices
- Oil Spill Detection and Mitigation
- Plant Pathogens and Fungal Diseases
- Advanced Optical Sensing Technologies
- Microfluidic and Bio-sensing Technologies
- Banana Cultivation and Research
- Optical Network Technologies
Istituto di Scienze Marine del Consiglio Nazionale delle Ricerche
2023-2024
National Research Council
2023-2024
Institute of Structure of Matter
2024
National Agency for New Technologies, Energy and Sustainable Economic Development
2023
University of Glasgow
2016-2019
Compound Semiconductor Technologies (United Kingdom)
2019
BAE Systems (United Kingdom)
2016-2018
This article provides a numerical study of the expected improvements in an underwater optical system given by single-mode laser diode operating within Fraunhofer line coastal water type.The performance is examined for silicon PIN direct-detection receiver euphotic zone.The solar irradiance, modelled as white noise, evaluated when using lithium niobate interference and birefringent filter with different field-of-view (FOV) characteristics clear sky situation.The results this analysis show...
Abstract Eggplant (Solanum melongena) is a major vegetable crop with great potential for genetic improvement owing to its large and mostly untapped diversity. It closely related over 500 species of Solanum subgenus Leptostemonum that belong primary, secondary, tertiary genepools exhibit wide range characteristics useful eggplant breeding, including traits adaptive climate change. Germplasm banks worldwide hold more than 19 000 accessions species, most which have yet be evaluated....
GaN-based laser diodes have been developed over the last 20 years making them desirable for many security and defence applications, in particular, free space communications. Unlike their LED counterparts, are not limited by carrier lifetime which makes attractive high speed communication, whether space, through fiber or underwater. Gigabit data transmission can be achieved modulating visible light from with a pseudo-random bit sequence (PRBS), recent results approaching 5 Gbit/s error...
Between 14 March and 21 April 2022, an extensive investigation of extraordinary Saharan dust intrusion over Europe was performed based on lidar measurements obtained by the European Aerosol Research Lidar Network (EARLINET). The episode divided into two distinct periods, one in April, characterized different transport paths. aerosol layers were studied 18 EARLINET stations, examining characteristics during four regions (M-I, M-II, M-III, M-IV A-I, A-II, A-III, A-IV, respectively), focusing...
We report on recent progress in the field of visible light communications including direct modulation blue laser devices at data rates beyond 10 Gbit/s, and transmission 2.5 Gbit/s OOK through water. also discuss advantages operating with single mode matched filtering receiver context applications significant solar background. The system performance for two types direct-detection receivers, a PIN detector less conventional silicon Photomultiplier technology will be presented.
Gallium nitride (GaN) laser diodes are becoming popular sources not only for lighting but applications ranging from communications to quantum. This paper presents the use of a commercial, off-the-shelf diode, with an emission wavelength 450 nm, visible light communication, both in free space and underwater scenarios. Data rates up 15 Gbit/s have been achieved by making orthogonal frequency division multiplexing (OFDM). In addition, distributed feedback (DFB) lasers realised emitting at...
Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI
Gallium nitride (GaN) sources are becoming a regular part of today's world and now key devices for lighting infrastructures, communications systems quantum applications, amongst others. In particular, many applications have seen the shift from LEDs to laser diodes make use higher powers, bandwidths increased transmission distances. Laser communication well established, however there where ability select single emitted wavelength is highly desirable, such as atomic clocks or in filtered...
The present study originated in the lack of research into achieving underwater total internal reflection (TIR) via acousto-optic effect. uniqueness this technique exists fact that it is based on a high sound pressure level which induces localised change refractive index seawater sufficient to achieve within communication channel. Different transducer systems for generating wave have been investigated and take form may be either standing wave, or novel beamforming technique. former an array...
Over the past 20 years, research into Gallium Nitride (GaN) has evolved from LED lighting to Laser Diodes (LDs), with applications ranging quantum medical and communications. Previously, off-the-shelf GaN LDs have been reported a view on free space underwater However, there are where ability select single emitted wavelength is highly desirable, namely in atomic clocks or filtered free-space communications systems. To accomplish this, Distributed Feedback (DFB) geometries utilised. Due...
Owing to increased performance capabilities over their LED counterparts, Gallium Nitride (GaN) based Laser Diodes (LDs) are becoming more prevalent in several applications, including lighting, visible light communications, medical spectroscopy, and atom cooling. For many of these a tunable, precise wavelength is necessary such that chromatic aberrations minimized specific wavelengths with narrow linewidth can be utilized for atomic transitions or filtered communications systems. This paper...
Within the frame of project CONCERNING (COmpact RamaN lidar for Atmospheric CO2 and ThERmodyNamic ProfilING), we investigated feasibility limits a ground-based Raman system dedicated to measurement profiles. The performance was evaluated through set numerical simulations. possibility exploiting both lines ν1:2ν2 resonance explored. An accurate quantification contribution O2 on signal other (e.g., aerosol, absorbing gases) disturbance sources carried out. integration over...
In this work, we describe how, from the early stages of device characterization, it is possible to evaluate suitability a given design for long life-time demand challenging deployment environment (uncooled, non-hermetic operation). Understanding reasons non-compliance and failure, as well their clear association with fabrication procedure steps, greatly helps systematically improve quality yield volume production.