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Related Experiment Video

Updated: Apr 20, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

A fully biocompatible single-mode distributed feedback laser.

Yunkyoung Choi¹, Heonsu Jeon, Sunghwan Kim

¹Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Republic of Korea.

|November 28, 2014

Summary

This summary is machine-generated.

Researchers developed a novel biocompatible laser using silk, riboflavin, and silver. This flexible, freestanding film laser operates in a single mode, offering potential for biomedical research applications.

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Area of Science:

Biomedical Engineering
Materials Science
Optoelectronics

Background:

Biocompatible lasers are highly desirable for biomedical research and applications.
Existing laser technologies often lack full biocompatibility, limiting their use in biological systems.
Developing novel materials for laser fabrication is crucial for advancing biomedical optics.

Purpose of the Study:

To report the development of a single-mode, biocompatible distributed feedback (DFB) laser.
To demonstrate a freestanding laser film composed of silk, riboflavin, and silver.
To investigate the potential of this novel laser for biomedical applications.

Main Methods:

Fabrication of a freestanding film incorporating silk, riboflavin, and silver.
Construction of a distributed feedback (DFB) laser structure within the film.
Characterization of the laser's mode properties and emission wavelength.

Main Results:

A single-mode biocompatible DFB laser was successfully fabricated.
The laser consists of a flexible, large surface area film made from silk, riboflavin, and silver.
The device exhibited single-mode lasing at a wavelength of 495 nm.

Conclusions:

A novel, fully biocompatible laser has been demonstrated using natural and metallic materials.
The flexible, freestanding film design offers advantages for integration into various biomedical setups.
The 495 nm single-mode lasing output shows promise for specific bio-imaging and therapeutic applications.