Tunable lasers emitting in the 2-3 µm wavelength range that are compatible with photonic integration platforms are of great interest for sensing applications. To this end, combining GaSb-based semiconductor gain chips with SiN photonic integrated circuits offers an attractive platform. Herein, we utilize the low-loss features of SiN waveguides and demonstrate a hybrid laser comprising a GaSb gain chip with an integrated tunable SiN Vernier mirror. At room temperature, the laser exhibited a maximum output power of 15 mW and a tuning range of ∼90 nm (1937-2026 nm). The low-loss performance of several fundamental SiN building blocks for photonic integrated circuits is also validated. More specifically, the single-mode waveguide exhibits a transmission loss as low as 0.15 dB/cm, the 90° bend has 0.008 dB loss, and the 50/50 Y-branch has an insertion loss of 0.075 dB.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OL.480867 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The Investigation of Graphene Oxide-Enhanced Hybrid Slurry Preparation and Its Polishing Characteristic on CVD Single Crystal Diamond.
Materials (Basel)
December 2024
College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China.
As an environment-friendly material, graphene oxide nanosheet can effectively improve the polishing surface quality of single crystal diamond workpieces. However, the lubricating and chemical effects of graphene oxide nanosheets have an uncertain impact on the polishing material removal rate. In this paper, the graphene oxide-enhanced hybrid slurry was prepared with good stability.
View Article and Find Full Text PDFUnipolar Barrier Photodetectors Based on Van Der Waals Heterostructure with Ultra-High Light On/Off Ratio and Fast Speed.
Adv Sci (Weinh)
January 2025
Information Materials and Intelligent Sensing Laboratory of Anhui Province, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology, Anhui University, 111 Jiu Long Road, Hefei, 230601, China.
Unipolar barrier architecture is designed to enhance the photodetector's sensitivity by inducing highly asymmetrical barriers, a higher barrier for blocking majority carriers to depressing dark current, and a low minority carrier barrier without impeding the photocurrent flow through the channel. Depressed dark current without block photocurrent is highly desired for uncooled Long-wave infrared (LWIR) photodetection, which can enhance the sensitivity of the photodetector. Here, an excellent unipolar barrier photodetector based on multi-layer (ML) graphene (G) is developed, WSe, and PtSe (G-WSe-PtSe) van der Waals (vdW) heterostructure, in which extremely low dark current of 1.
View Article and Find Full Text PDFEnergy-level rich nanorings hybridizing Ag, Au and AgCl as high-performance SERS substrate for numerous molecules.
Talanta
January 2025
MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, China. Electronic address:
The current surface-enhanced Raman scattering (SERS) substrates typically feature a single energy level, posing challenges in coordinating electromagnetic enhancement (EM) and chemical enhancement (CM), thereby limiting the sensitive detection of numerous crucial target molecules. In this study, novel aggregated nanorings (a-NRs) hybridizing Ag, Au and AgCl are constructed as SERS substrates. On one hand, the obtained a-NRs exhibit robust localized surface plasmon resonance absorption, whose wavelength can be tuned to match three commonly used laser wavelengths (532, 633 and 785 nm) to gain strong EM effect.
View Article and Find Full Text PDFEnhanced Light-Matter Interaction with Bloch Surface Wave Modulated Plasmonic Nanocavities.
Nano Lett
January 2025
State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, 100871 Beijing, China.
Article Synopsis
- Strong coupling between nanocavities and single excitons at room temperature is crucial for studying cavity quantum electrodynamics, influenced by factors like light confinement and electric field orientation.
- A hybrid cavity design combining a one-dimensional photonic crystal and plasmonic nanocavity enhances quality factor, minimizes mode volume, and allows control of electric field direction using Bloch surface waves.
- Achieving a Rabi splitting of around 186 meV with only 8 excitons involved marks a significant advance, producing an effective coupling strength of 17.6 meV per exciton, which is nearly double the previously reported values for TMD-based systems.
Cationic Modification in Hybrid Iodates: A Pathway to Superior Performance.
Inorg Chem
January 2025
Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, P. R. China.
The utilization of nonlinear optical (NLO) crystals plays a crucial role in the contemporary laser industry, and the advancement of novel NLO-active units is essential for the exploration of NLO materials. Two novel organic-inorganic hybrid iodates, designated as (CNH)MoO(IO)·3HO () and (CNIH)MoO(IO)·4HO () were synthesized via mild hydrothermal methods, exhibiting band gaps of 3.75 and 3.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!