Programmable Rainbow-Colored Optofluidic Fiber Laser Encoded with Topologically Structured Chiral Droplets

Area of Science:

• Photonics and Optofluidics
• Materials Science
• Laser Technology

Background:

• Optofluidic lasers offer potential for miniaturized light sources and integrated photonics.
• Controlling multicolor lasing with high reconfigurability and broad color gamut remains a challenge.
• Existing materials often limit color range and programmability in optofluidic lasers.

Purpose of the Study:

• To introduce a fully programmable multicolor laser system.
• To achieve precise control over laser emission wavelengths and colors.
• To expand the color gamut beyond existing limitations for optofluidic lasers.

Main Methods:

• Encapsulating organic-dye-doped cholesteric liquid crystal microdroplet lasers within an optofluidic fiber.
• Tuning laser emission wavelengths by manipulating topological nanoshell structures via chiral dopant concentrations.
• Achieving monochromatic, dual-color, tri-color, and white lasing with tunable color temperatures.

Main Results:

• Demonstrated a fully programmable multicolor laser with tunable wavelengths across the visible spectrum.
• Achieved precision control over distinctive lasing wavelengths and colors.
• Generated a CIE color map with 145% more perceptible colors than standard RGB space.
• Showcased capabilities for monochromatic, dual, tri-color, and white lasing.

Conclusions:

• The developed optofluidic laser system offers unprecedented control over multicolor lasing.
• This technology advances programmable lasers, enabling applications in multiplexed encoding and biomedical detection.
• The expanded color gamut and tunability open new avenues in light-matter interaction manipulation.