TY - JOUR
T1 - Strong exciton-photon coupling with colloidal quantum dots in a high- Q bilayer microcavity
AU - Giebink, Noel C.
AU - Wiederrecht, Gary P.
AU - Wasielewski, Michael R.
N1 - Funding Information:
Use of the Center for Nanoscale Materials was supported by the Department of Energy, Office of Basic Energy Sciences through Contract No. DE-AC02-06CH11357. This work was partially supported by the Argonne-Northwestern Solar Energy Research (ANSER) Center (Award No. DE-SC0001059).
PY - 2011/2/21
Y1 - 2011/2/21
N2 - We demonstrate evanescently coupled bilayer microcavities with Q -factors exceeding 250 fabricated by a simple spin-coating process. The cavity architecture consists of a slab waveguide lying upon a low refractive index spacer layer supported by a glass substrate. For a lossless guide layer, the cavity Q depends only on the thickness of the low index spacer and in principle can reach arbitrarily high values. We demonstrate the versatility of this approach by constructing cavities with a guide layer incorporating CdSe/ZnS core/shell quantum dots, where we observe strong coupling and hybridization between the 1S(e)-1S3/2(h) and 1S(e)-2S3/2(h) exciton states mediated by the cavity photon. This technique greatly simplifies the fabrication of high- Q planar microcavities for organic and inorganic quantum dot thin films and opens up new opportunities for the study of nonlinear optical phenomena in these materials.
AB - We demonstrate evanescently coupled bilayer microcavities with Q -factors exceeding 250 fabricated by a simple spin-coating process. The cavity architecture consists of a slab waveguide lying upon a low refractive index spacer layer supported by a glass substrate. For a lossless guide layer, the cavity Q depends only on the thickness of the low index spacer and in principle can reach arbitrarily high values. We demonstrate the versatility of this approach by constructing cavities with a guide layer incorporating CdSe/ZnS core/shell quantum dots, where we observe strong coupling and hybridization between the 1S(e)-1S3/2(h) and 1S(e)-2S3/2(h) exciton states mediated by the cavity photon. This technique greatly simplifies the fabrication of high- Q planar microcavities for organic and inorganic quantum dot thin films and opens up new opportunities for the study of nonlinear optical phenomena in these materials.
UR - http://www.scopus.com/inward/record.url?scp=79952083087&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79952083087&partnerID=8YFLogxK
U2 - 10.1063/1.3558731
DO - 10.1063/1.3558731
M3 - Article
AN - SCOPUS:79952083087
VL - 98
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 8
M1 - 081103
ER -