Switchable Cascade Raman Lasing in a Tellurite Glass Microresonator

Review Materials Science, Ceramics

Comprehensive review of advances in the field of chalcogenide glass microresonators

Soumya Suresh et al.

Summary: This review showcases the recent advances in Chalcogenide glass high Q cavities and discusses the theoretical research and challenges involved in the topic.

INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE (2023)

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Article Optics

Engineered Raman Lasing in Photonic Integrated Chalcogenide Microresonators

Di Xia et al.

Summary: Research has shown that photonic engineered Raman lasers based on chip-integrated chalcogenide microresonators have high nonlinearity, wide transparency, and low loss. By tuning the dispersion of the chalcogenide microresonator, both single-mode Raman lasing and a broadband Raman-Kerr comb have been demonstrated, showcasing a gap-free tuning range over 140 nm.

LASER & PHOTONICS REVIEWS (2022)

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Article Chemistry, Analytical

Cascade Brillouin Lasing in a Tellurite-Glass Microsphere Resonator with Whispering Gallery Modes

Elena A. Anashkina et al.

Summary: We fabricated a microsphere resonator with high Q-factors and Brillouin gain coefficient using high-quality tellurite glass. Experimental results demonstrated the successful realization of cascade Stokes-Brillouin lasing, which was supported by theoretical analysis.

SENSORS (2022)

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Article Chemistry, Analytical

SiO2 Microsphere Array Coated by Ag Nanoparticles as Raman Enhancement Sensor with High Sensitivity and High Stability

Haiyang Sha et al.

Summary: This paper presents a double monolayer Ag@SiO2 substrate with high sensitivity and high uniformity for surface-enhanced Raman scattering (SERS) applications. The experimental results show that the Ag@SiO2 sample with AgNPs diameter of 30 nm has the maximum electric field value at the AgNPs gap. The limit of detection (LOD) for Rhodamine 6G (R6G) analytes is 10(-16) mol/L, and the analytical enhancement factor (AEF) can reach around 2.3x10(13). The sample also exhibits high uniformity with a calculated relative standard deviation (RSD) of approximately 5.78%.

SENSORS (2022)

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Article Multidisciplinary Sciences

Broadband high-Q multimode silicon concentric racetrack resonators for widely tunable Raman lasers

Yaojing Zhang et al.

Summary: The authors demonstrate a new approach to maintain high-quality-factor resonances using detuning in concentric racetrack resonators. By implementing a broadband pulley directional coupler and concentric racetracks, they achieved a broadband high-Q multimode silicon resonator. This resonator was then used to demonstrate a broadly tunable Raman silicon laser.

NATURE COMMUNICATIONS (2022)

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Article Instruments & Instrumentation

Er3+-doped fluorotellurite glass microsphere lasers with ultra-low threshold

Haizhen Ding et al.

Summary: Er3+-doped fluorotellurite glass microsphere lasers exhibit low lasing threshold and temperature tuning capability, making them suitable for low-threshold, compact infrared laser sources and temperature sensing applications.

INFRARED PHYSICS & TECHNOLOGY (2022)

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Article Engineering, Electrical & Electronic

Optical Detection of Ammonia in Water Using Integrated Up-Conversion Fluorescence in a Fiberized Microsphere

Meng Zhang et al.

Summary: A novel optical sensor for monitoring ammonia concentration in water is demonstrated using up-conversion fluorescence intensity ratio (FIR), with a sensor element consisting of Er3+-Yb3+ co-doped tellurite glass microsphere and phenol red. The sensor utilizes the specific absorption properties of phenol red in the presence of ammonia to establish a linear relationship between FIR and ammonia concentration in the aqueous solution.

JOURNAL OF LIGHTWAVE TECHNOLOGY (2021)

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Article Optics

Octave-spanning coherent supercontinuum generation in a step-index tellurite fiber and towards few-cycle pulse compression at 2 μm

B. Kibler et al.

Summary: The experimental demonstration shows that supercontinuum generation with a bandwidth of 140 THz is achievable in a 10 cm-long all-normal dispersion step-index tellurite fiber pumped by a turn-key femtosecond fiber laser. By controlling soliton self-frequency shift and quasi-linear chirp, pulse duration can be compressed from 85 fs to 12 fs during nonlinear propagation.

OPTICS COMMUNICATIONS (2021)

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Article Multidisciplinary Sciences

Single-mode characteristic of a supermode microcavity Raman laser

Pei-Ji Zhang et al.

Summary: The study demonstrates the single-mode lasing behavior of the supermode Raman laser in a whispering-gallery microcavity, with improved performance using self-injection to manipulate the lasing supermodes, resulting in increased side-mode suppression ratio and reduced laser linewidth.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2021)

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Article Optics