[Th-P] Nanophotonics

[Th-P-69] Room temperature lasing from a bound state in the continuum confined in a GaN-based subwavelength grating

〇Tomasz Fąs¹, Emilia Pruszyńska-Karbownik¹, Marta Sawicka², Oliwia Gołyga², Anna Feduniewicz-Żmuda², Grzegorz Muzioł², Mateusz Słowikowski³, Czesław Skierbiszewski², Tomasz Czyszanowski⁴, Jan Suffczyński¹ (1. University of Warsaw (Poland), 2. Institute of High Pressure Physics (Poland), 3. Warsaw University of Technology (Poland), 4. Łódź University of Technology (Poland))

We demonstrate a room-temperature nanolaser based on bound states in the continuum within a GaN subwavelength grating. Operating at 435 to 465 nm range with linewidth of 0.05 nm, the device offers tunable, polarized emission compatible with GaN technology for integrated nanophotonic light sources.