Nanomaterials (Dec 2021)

Polarization Angle Dependence of Optical Gain in a Hybrid Structure of Alexa-Flour 488/M13 Bacteriophage

  • Inhong Kim,
  • Juyeong Jang,
  • Seunghwan Lee,
  • Won-Geun Kim,
  • Jin-Woo Oh,
  • Irène Wang,
  • Jean-Claude Vial,
  • Kwangseuk Kyhm

DOI
https://doi.org/10.3390/nano11123309
Journal volume & issue
Vol. 11, no. 12
p. 3309

Abstract

Read online

We measured optical modal gain of a dye–virus hybrid structure using a variable stripe length method, where Alexa-fluor-488 dye was coated on a virus assembly of M13 bacteriophage. Inspired by the structural periodicity of the wrinkle-like virus assembly, the edge emission of amplified spontaneous emission was measured for increasing excited optical stripe length, which was aligned to be either parallel or perpendicular to the wrinkle alignment. We found that the edge emission showed a strong optical anisotropy, and a spectral etalon also appeared in the gain spectrum. These results can be attributed to the corrugated structure, which causes a similar effect to a DFB laser, and we also estimated effective cavity lengths.

Keywords