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Homotopic Vortex
Lasing Mediated by a Resonant Geometric
Phase in a Bound States in the Continuum Cavity
Ronghui Lin (2678632)
Thi Thu Ha Do (17620982)
Emek Goksu Durmusoglu (10196036)
Deepak K. Sharma (1926904)
Syed Akhil (11525392)
Vytautas Valuckas (4906921)
Corentin Dabard (9159142)
Arseniy I. Kuznetsov (1568404)
Hilmi Volkan Demir (1261494)
Jinghua Teng (1780759)
Son Tung Ha (1668499)
Biophysics
Physical Sciences not elsewhere classified
Evolutionary Biology
Chemical Sciences not elsewhere classified
vortex lasing modes
previously unexplored form
pancharatnam – berry
orbital angular momentum
continuous homotopic evolution
geometric phases associated
field polarization evolution
resonant geometric phase
generalized pb phase
polarization evolution
phase engineering
x </
wave propagation
wave physics
versatile route
results reveal
prominent example
optical resonances
optical phenomena
oblique incidence
gain medium
experimentally validate
chip control
broad range
bound states
1 –<
Geometric phases are fundamental to wave physics and
underpin a
broad range of optical phenomena. The most prominent example, the
Pancharatnam–Berry (PB) phase, originates from polarization
evolution during wave propagation. In contrast, geometric phases associated
with optical resonances and cavities remain largely unexplored. Here,
we uncover the relation between the generalized PB phase and the far-field
polarization evolution in bound states in the continuum (BIC) cavities.
We demonstrate the continuous homotopic evolution of vortex lasing
modes through geometric-phase engineering of BIC resonances. To experimentally
validate this concept, we realize metasurface lasers composed of titanium
dioxide hole arrays integrated with CdSe/Cd<sub><i>x</i></sub>Zn<sub>1–<i>x</i></sub>S core/shell colloidal
quantum wells as the gain medium. Our results reveal a previously
unexplored form of spin–orbit interaction in BIC cavities under
oblique incidence and provide a versatile route for on-chip control
of polarization and orbital angular momentum in nanolasers.
2026-09-29T00:00:00Z
Text
Journal contribution
10.1021/acs.nanolett.6c02899.s001
https://figshare.com/articles/journal_contribution/Homotopic_Vortex_Lasing_Mediated_by_a_Resonant_Geometric_Phase_in_a_Bound_States_in_the_Continuum_Cavity/34024110
CC BY-NC 4.0