Related Experiment Video
Updated: Nov 17, 2025
Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
Published on: February 25, 2017
Ultralow-Threshold Continuous-Wave Room-Temperature Crystal-Fiber/Nanoperovskite Hybrid Lasers for All-Optical
Duc Huy Nguyen1, Jia-Yuan Sun1, Chia-Yao Lo2
1Department of Physics, National Dong Hwa University, Hualien, 974301, Taiwan.
Researchers achieved continuous-wave (CW) room-temperature (RT) laser operation using a novel perovskite crystal fiber hybrid. This breakthrough offers ultralow thresholds and stable output, advancing integrated photonics.
Area of Science:
- Optoelectronics
- Materials Science
- Photonics
Background:
- Achieving continuous-wave (CW) room-temperature (RT) laser operation with low energy consumption is crucial for electrically driven lasers.
- Perovskite lasers are promising but limited by air/thermal instability, restricting them to pulsed or cryogenic operations with poor durability for CW RT applications.
- Monolithic integration of perovskite lasers in chip-level fiber schemes is highly desirable but challenging.
Purpose of the Study:
- To demonstrate ultralow-threshold CW RT laser action in a compact, monolithic perovskite-based system.
- To overcome the inherent instability of perovskites for practical laser applications.
- To advance monolithic all-optical integration using a novel hybrid architecture.
Main Methods:
- Development of a hybrid architecture combining crystal fibers with nanoperovskites.
- Utilizing a 405 nm diode laser for direct pumping.
- Leveraging Purcell-enhanced light-matter coupling within an atomically smooth fiber microcavity.
- Characterization of laser performance, including threshold, efficiency, and operational stability.
Main Results:
- First demonstration of ultralow-threshold CW RT laser action in a crystal fiber/nanoperovskite hybrid.
- Achieved a high Q factor (≈1500) and a high β (0.31) due to enhanced light-matter coupling.
- Record-low threshold of 132 nW and optical-to-optical slope conversion efficiency of 2.93% for a 762 nm laser.
- Demonstrated stable CW and RT output, overcoming previous durability issues.
Conclusions:
- Crystal fibers are key to enabling stable, ultralow-threshold CW RT laser operation in perovskite-based systems.
- The developed hybrid architecture offers a compact, monolithic, and inexpensive solution for advanced laser applications.
- This work represents a significant step towards monolithic all-optical integration and practical perovskite lasers.
More Related Videos
11:08Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
08:48Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019