Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

EP300/YAP1-SERPINE1 Signaling Regulates Ductular Reaction and Liver Fibrosis in Biliary Atresia.

Cellular and molecular gastroenterology and hepatology·2025

Same author

Universal terahertz trace molecular fingerprint sensing based on high-degree-of-freedom dielectric metagrating.

Physical chemistry chemical physics : PCCP·2025

Same author

Real-Time Three-Dimensional Imaging of Cell-Substrate Adhesion Structures Based on Plasmonic Scattering Microscopy.

ACS sensors·2025

Same author

Joint loss function design in diffractive optical neural network classifiers for high power efficiency.

Optics express·2025

Same author

Features of defecation dysfunction among patients with Hirschsprung disease in early childhood.

BMC gastroenterology·2025

Same author

Integrated device of luminescent solar concentrators and electrochromic supercapacitors for self-powered smart window and display.

Nature communications·2025

Search research articles

Related Experiment Video

Updated: Feb 26, 2026

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications

Published on: June 2, 2017

Coherent Random Lasing from Dye Aggregates in Polydimethylsiloxane Thin Films.

Lihua Ye¹, Yangyang Feng¹, Zhixiang Cheng¹

¹Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University , Nanjing 210018, P. R. China.

ACS Applied Materials & Interfaces

|July 25, 2017

Summary

Researchers developed a low-threshold coherent random laser using dye-doped PDMS. Adding nanoparticles significantly reduced the pump threshold, enabling potential applications in optoelectronics and imaging.

Keywords:

PDMS thin film leaky-waveguide micro-/nanocrystals multiple scattering random laser

More Related Videos

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

Published on: September 20, 2017

Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures

Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures

Published on: November 14, 2025

Related Experiment Videos

Last Updated: Feb 26, 2026

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications

Published on: June 2, 2017

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

Published on: September 20, 2017

Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures

Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures

Published on: November 14, 2025

Area of Science:

Optics and Photonics
Materials Science

Background:

Coherent random lasers (CRLs) offer potential for advanced optical applications.
Optimizing pump thresholds and understanding feedback mechanisms are crucial for CRL development.

Purpose of the Study:

Investigate coherent random lasers (CRLs) in dye-doped polydimethylsiloxane (PDMS) thin films.
Explore the impact of nanoparticle doping and film structure on CRL performance.
Analyze the underlying mechanisms for feedback and wavelength tuning.

Main Methods:

Fabrication of pure dye and nanoparticle-doped (SiO2 NPs) thin films using PDMS and Pyrromethene 597 (PM597) dye.
Characterization of pump thresholds for coherent random lasing.
Analysis of the influence of film structure (e.g., substrate adhesion) on lasing properties.
Investigation of wavelength shifts by altering pump stripe length and film thickness.

Main Results:

Achieved a low pump threshold of 1.5 mJ/cm² in pure PM597 dye-doped PDMS films.
Reduced the pump threshold to 0.75 mJ/cm² with SiO2 nanoparticle doping.
Observed an increase in threshold upon film removal from the substrate, highlighting the role of leaky-waveguide structures.
Demonstrated red-shifts in peak wavelength (6.7 nm and 5.93 nm) by adjusting pump stripe length and film thickness, respectively.
Identified spontaneous formation of PM597 micro-/nanocrystals due to dye solubility changes and PDMS curing as the source of gain and feedback.

Conclusions:

Spontaneously formed dye micro-/nanocrystals in PDMS act as gain and feedback centers for CRLs.
Leaky-waveguide structures significantly contribute to lowering the CRL pump threshold.
The developed thin-film random laser is suitable for integrated optoelectronics and display imaging applications.