Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
We report mode-locked ~1550 nm output of transform-limited ~180 fs pulses from a large mode-area (diameter ~50 μm) guided-wave erbium fluorozirconate glass laser. The passively mode-locked oscillator generates pulses with 25 nm bandwidth at 156 MHz repetition rate and peak-power of 260 W. Scalability to higher repetition rate is demonstrated by transform-limited 410 fs pulse output at 1.3 GHz. To understand the origins of the broad spectral output, the laser cavity is simulated by using a numerical solution to the Ginzburg-Landau equation. This paper reports the widest bandwidth and shortest pulses achieved from an ultra-fast laser inscribed waveguide laser.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OE.24.027177 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Heterostructure nanodisks for multicolor polariton lasers with controllable whispering-gallery modes.
Nanoscale
September 2025
Department of Chemistry, Kyung Hee University, Seoul 02447, Korea.
Highly efficient optoelectronic devices of ultrasmall sizes are demanded as building blocks of next-generation integrated circuits, where tunable color enhances the feasibility of various applications. Here, we realize tunable multicolor nanolasers using disk-shaped axial heterostructures composed of III-nitride materials (GaN/InGaN/GaN), leveraging the optical confinement effect and active waveguiding. In heterostructure nanodisks, the development of exciton-polariton induces unique features near the resonance regime, and the formation of whispering-gallery modes facilitates optical gain processes for the polaritonic lasing of GaN.
View Article and Find Full Text PDFLateral, Directional, and Polarized Light Emission from a Silicon Metasurface.
Nano Lett
September 2025
Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China.
Silicon (Si) light sources integratable with Si waveguides are highly desirable in integrated optical circuits. Here, we investigated systematically the light emission from a Si metasurface constructed with paired Si nanocuboids under the excitation of 400 nm femtosecond laser pulses. It was revealed that such a Si metasurface supports various optical resonances in the visible-to-near-infrared spectral range.
View Article and Find Full Text PDFDemonstration of Monolithic Integration of InAs Quantum Dot Microdisk Light Emitters and Photodetectors Directly Grown on On-Axis Silicon (001).
Micromachines (Basel)
July 2025
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China.
Silicon-based microcavity quantum dot lasers are attractive candidates for on-chip light sources in photonic integrated circuits due to their small size, low power consumption, and compatibility with silicon photonic platforms. However, integrating components like quantum dot lasers and photodetectors on a single chip remains challenging due to material compatibility issues and mode field mismatch problems. In this work, we have demonstrated monolithic integration of an InAs quantum dot microdisk light emitter, waveguide, and photodetector on a silicon platform using a shared epitaxial structure.
View Article and Find Full Text PDFA Compact and Wideband Active Asymmetric Transmit Array Unit Cell for Millimeter-Wave Applications.
Sensors (Basel)
August 2025
Institut National de la Recherche Scientifique (INRS), Montreal, QC H5A 1K6, Canada.
This study presents a compact reconfigurable asymmetric unit cell designed for millimeter-wave (mm-wave) transmit array (TA) antennas. Despite its compact size, the proposed unit cell achieves a broad bandwidth and low insertion loss. By breaking the symmetry of the unit cell and by implementing two MA4AGP910 pin diodes in the proposed unit cell, a phase difference of 180 degrees (1-bit configuration) is obtained in a wide frequency band.
View Article and Find Full Text PDFDirect Nanoparticle Sensing in Liquids with Free-Space Excited Optical Whispering-Gallery-Mode Microresonators.
Sensors (Basel)
August 2025
Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica (INO), Via Campi Flegrei, 34-Comprensorio A. Olivetti, 80078 Pozzuoli, Italy.
Whispering-gallery-mode (WGM) microresonators are amongst the most promising optical sensors for detecting bio-chemical targets. A number of laser interrogation methods have been proposed and demonstrated over the last decade, based on scattering and absorption losses or resonance splitting and shift, harnessing the high-quality factor and ultra-small volume of WGMs. Actually, regardless of the sensitivity enhancement, their practical sensing operation may be hampered by the complexity of coupling devices as well as the signalprocessing required to extract the WGM response.
View Article and Find Full Text PDF