TY - JOUR
T1 - Coherence Switching with Metamaterials
AU - Koivurova, Matias
AU - Hakala, Tommi K.
AU - Turunen, Jari
AU - Friberg, Ari T.
AU - Caglayan, Humeyra
AU - Ornigotti, Marco
N1 - Funding Information:
The authors acknowledge the financial support of the Academy of Finland Flagship Programme (PREIN–decisions 320165, 320166). H. C. acknowledges financial support of the European Research Council (Starting Grant project aQUARiUM; Agreement No. 802986), T. K. H. acknowledges Academy of Finland Project No. 322002, and A. T. F. acknowledges Academy of Finland Project No. 310511.
Funding Information:
Academy of Finland H2020 European Research Council
Publisher Copyright:
© 2021 Published by the American Physical Society
PY - 2021/10
Y1 - 2021/10
N2 - We demonstrate, theoretically, how the insertion of an enhanced epsilon-near-zero (EENZ) mirror in a laser cavity grants exceptional control over the coherence properties of the emitted light beam. By exploiting the peculiar sensitivity to polarization of EENZ materials, we achieve superior control over the spatial coherence of the emitted laser light, which can be switched at will between nearly incoherent and fully coherent, solely by means of polarization optics. Our EENZ cavity design is expected to be an efficient, compact, reconfigurable, and easily scalable source of light for illumination and speckle contrast imaging, as well as any other application that benefits from controlled spatial coherence.
AB - We demonstrate, theoretically, how the insertion of an enhanced epsilon-near-zero (EENZ) mirror in a laser cavity grants exceptional control over the coherence properties of the emitted light beam. By exploiting the peculiar sensitivity to polarization of EENZ materials, we achieve superior control over the spatial coherence of the emitted laser light, which can be switched at will between nearly incoherent and fully coherent, solely by means of polarization optics. Our EENZ cavity design is expected to be an efficient, compact, reconfigurable, and easily scalable source of light for illumination and speckle contrast imaging, as well as any other application that benefits from controlled spatial coherence.
U2 - 10.1103/PhysRevLett.127.153902
DO - 10.1103/PhysRevLett.127.153902
M3 - Article
AN - SCOPUS:85116945622
SN - 0031-9007
VL - 127
JO - Physical Review Letters
JF - Physical Review Letters
IS - 15
M1 - 153902
ER -