7 papers
Ultranarrow-linewidth self-injection-locked tunable blue GaN DFB laser
Georges Perin, Laurent Lablonde, Marco Rossetti +4
In this work, we demonstrate an ultra-narrow linewidth self-injection locked distributed feedback (DFB) diode laser emitting at 452 nm, achieving an intrinsic linewidth of 170 Hz w…
Yellow whispering-gallery-mode lasing from amorphous fluoride microspheres
Abhishek Sureshkumar, Jonathan Demaimay, Georges Perin +7
Compact, low-noise coherent light sources in the visible remain challenging due to limited gain platforms and inefficient pumping. We report a new route to visible microlasing base…
Experimental Evidence of Thermal Capillary Waves Excitation on a Microsphere Surface
Abhishek Sureshkumar, Georges Perin, Julien Lapeyre +7
Whispering-gallery-mode (WGM) microsphere resonators have emerged as a versatile platform across various photonic applications. Despite significant progress, their performance at s…
Yellow stimulated emission from Dy-doped silica glass microspheres
Abhishek Sureshkumar, Jonathan Demaimay, Georges Perin +9
Dy-doped silica glass whispering gallery mode microspheres are fabricated by fiber fusion splicing. They present an almost ideal spherical morphology with a radius ranging f…
Sub-20 kHz low frequency noise near ultraviolet miniature external cavity laser diode
R Kervazo, A Congar, G Perin +6
We present a compact InGaN fiber Bragg grating (FBG) semiconductor laser diode operating below 400 nm in the single-mode emission regime. This compact coherent laser source exhibit…
High-Q Whispering-Gallery-Modes Microresonators in the Near-Ultraviolet Spectral Range
Georges Perin, Yannick Dumeige, Patrice Féron +1
High- whispering gallery mode microresonators are cornerstones to develop compact coherent sources like single frequency lasers or frequency combs. This work reports a detailed…
Narrow Linewidth near-UV InGaN Laser Diode based on External Cavity Fiber Bragg Grating
Antoine Congar, Mathilde Gay, Georges Perin +8
We realize a fiber Bragg grating InGaN based laser diode emitting at 400 nm and demonstrate its high coherency. Thanks to the fabrication of a narrow band fiber Bragg grating in th…