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Published on: October 13, 2017
Lasing from InGaP quantum dots in a spin-coated flexible microcavity.
V M Menon1, M Luberto, N V Valappil
1Laboratory for Nano and Micro Photonics, Department of Physics, Queens College of the City University of New York, Flushing, NY 11367, USA. vmenon@qc.cuny.edu
Optics Express
|November 26, 2008
Summary
We developed a flexible microcavity laser using quantum dots and polymer mirrors. This tunable laser can be shaped to fit various applications, combining organic and inorganic material benefits.
Area of Science:
- Optoelectronics
- Materials Science
- Nanotechnology
Background:
- Microcavity lasers are crucial for optical technologies.
- Developing flexible and tunable laser sources remains a significant challenge.
- Hybrid organic-inorganic materials offer unique properties for optoelectronic devices.
Purpose of the Study:
- To realize a mechanically flexible microcavity laser.
- To investigate the use of colloidal quantum dots and polymer Bragg mirrors.
- To demonstrate the tunability of the laser's emission spectra.
Main Methods:
- Fabrication of vertical cavity surface emitting lasers (VCSELs) using spin coating.
- Utilizing Indium Gallium Phosphide (InGaP) colloidal quantum dots as the gain medium.
- Employing alternating polymer layers with different refractive indices for Bragg mirrors.
- Performing photoluminescence measurements to assess spontaneous emission enhancement.
Main Results:
- Successful realization of a mechanically flexible microcavity laser emitting at 657 nm.
- Demonstration of enhanced spontaneous emission due to the microcavity.
- The device can be peeled off the substrate, forming a flexible structure.
- The emission spectra of the flexible laser are mechanically tunable.
Conclusions:
- A novel class of hybrid lasers combining organic and inorganic materials has been achieved.
- The flexible microcavity laser offers conformability to any shape and tunable emission.
- This technology holds promise for advanced optoelectronic applications requiring flexible and adaptable light sources.
