Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1680377 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2015 | 4 Pages |
Abstract
Proton beam writing is employed to fabricate smooth sidewall whispering gallery mode microcavities in dye-doped polymer. These microcavities acts as microlasers under optical excitation in ambient atmosphere. Different cavity designs are implemented to obtain directional laser emission from the whispering gallery mode lasers. The microcavities are fabricated in Rhodamine B doped SU-8 polymer and are optically pumped with 532 nm pulsed laser. These microlasers emit light within the emission band of Rhodamine B with operational wavelength around 600 nm and the required pumping laser threshold is lower than 3 μJ/mm2 for all the micro-lasers.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
Sudheer Kumar Vanga, Andrew A. Bettiol,