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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Waveguide lasing from V-shaped ZnO microstructure.
Sang Hyun Lee1, Takenari Goto, Hiroshi Miyazaki
1Korea Institute of Science and Technology, Jeonbuk, South Korea. sanghyun.lee@kist.kr
Optics Letters
|August 14, 2013
Summary
Zinc oxide (ZnO) V-shaped microstructures exhibit strong laser emissions due to unique optical resonance. This V-shaped cavity design confines light, leading to efficient laser performance at room temperature.
Area of Science:
- Materials Science
- Optoelectronics
- Nanotechnology
Background:
- Zinc oxide (ZnO) microstructures are promising for optoelectronic applications.
- V-shaped optical cavities can enhance light confinement and emission properties.
Purpose of the Study:
- To investigate the optical resonance and laser emission characteristics of V-shaped ZnO microstructures.
- To understand the role of the V-shaped geometry in light confinement and feedback mechanisms.
Main Methods:
- Growth of ZnO microstructures using thermal chemical vapor deposition.
- Characterization of laser emissions under UV laser excitation at room temperature.
- Analysis of optical phenomena including cutoff and reflection within the V-shaped cavity.
Main Results:
- Strong laser emissions were observed from V-shaped ZnO microstructures.
- Emissions originated from the tip of the branches and the bottom facet.
- The V-shaped cavity exhibited quasi-Fabry-Perot resonance and light reflection, confirming its function.
Conclusions:
- V-shaped ZnO microstructures can function as effective optical resonance cavities.
- The unique geometry facilitates strong laser emission through light confinement and partial reflection.
- This study highlights the potential of V-shaped ZnO structures for advanced laser applications.
