59 citations · 154 across the 8 of their papers we have counts for
8 papers
Optimization of laser dynamics for active stabilization of DF--VECSELs dedicated to cesium CPT clocks
Grégory Gredat, Hui Liu, Jérémie Cotxet +5
We report the implementation and performance of a double servo-loop for intensity and phase-difference active stabilization of a dual-frequency vertical external--cavity surface-em…
Ultra-low noise dual-frequency VECSEL at telecom wavelength using fully correlated pumping
Hui Liu, Grégory Gredat, Syamsundar De +7
An ultra-low intensity and beatnote phase noise dual-frequency vertical-external-cavity surface-emitting laser is built at telecom wavelength. The pump laser is realized by polariz…
Noise investigation of a dual-frequency VECSEL for application to Cesium clocks
Hui Liu, Grégory Gredat, Ghaya Baili +4
We theoretically and experimentally study the noise of a class-A dual-frequency vertical external cavity surface emitting laser operating at Cesium clock wavelength. The intensity…
Fully-correlated pumping for dual-frequency VECSELs dedicated to cesium CPT clocks
G. Gredat, D. Chatterjee, G. Baili +4
We report a fully-correlated multi-mode pumping architecture optimized for dramatic noise reduction of a class-A dual-frequency Vertical External Cavity Surface Emitting Laser (VEC…
Unveiling the Dynamics of Optical Frequency Combs from Phase-Amplitude Correlations
Matthieu Ansquer, Valérian Thiel, Syamsundar De +4
The noise dynamics of an Optical Frequency Comb (OFC) based on a mode-locked Ti-Sapphire laser is analyzed in terms of noise modes. A spectrally resolved multipixel homodyne detect…
Expansion of the tetragonal magnetic phase with pressure in the iron-arsenide superconductor Ba{1-x}KxFe2As2
E. Hassinger, G. Gredat, F. Valade +11
In the temperature-concentration phase diagram of most iron-based superconductors, antiferromagnetic order is gradually suppressed to zero at a critical point, and a dome of superc…
New Phase Induced by Pressure in the Iron-Arsenide Superconductor K-Ba122
E. Hassinger, G. Gredat, F. Valade +10
The electrical resistivity rho of the iron-arsenide superconductor Ba1-xKxFe2As2 was measured in applied pressures up to 2.6 GPa for four underdoped samples, with x = 0.16, 0.18, 0…
Experimental study of the delayed threshold phenomenon in a semiconductor laser
Abdelkrim El Amili, Grégory Gredat, Mehdi Alouini +2
An experimental study of the delayed threshold phenomenon in a Vertical Extended Cavity Semiconductor Emitting Laser is carried out. Under modulation of the pump power, the laser i…