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Efficient picosecond ultrasonics with a single-cavity dual-comb laser
(2023)Proceedings of SPIE ~ Ultrafast Phenomena and Nanophotonics XXVIIWe apply a spatially multiplexed low-noise solid-state dual-comb oscillator delivering two pulse trains at slightly different repetition rates for picosecond ultrasonics measurements. This novel laser delivers more than 2 W of average power per pulse train with 200fs pulses. We characterize the laser performance demonstrating its ultra-low relative timing jitter and relative intensity noise. By employing a high-sensitivity detection scheme ...Other Conference Item -
Spatially-multiplexed dual-comb lasers: from 80 MHz to 1 GHz
(2023)Proceedings of SPIE ~ Solid State Lasers XXXII: Technology and DevicesSingle-cavity dual-comb lasers are emerging as new light sources benefiting many applications. Here we demonstrate two new operation regimes for these lasers: a 250-MHz repetition rate 1-ps pulse duration laser, and a 1-GHz 80-fs laser. Each source delivers more than 2 W of average power per comb. Compared to our earlier 80-MHz laser which was limited to 500 Hz, both new lasers can achieve up to 25 kHz repetition rate difference without ...Other Conference Item -
Towards high sensitivity spectroscopy with single-cavity dual-comb lasers and OPOs
(2023)Proceedings of SPIE ~ Nonlinear Frequency Generation and Conversion: Materials and Devices XXIIWe present a low-noise and high power per comb line dual-comb source based on a PPLN OPO and an Yb:YAG pump. Both the laser and OPO are spatially-multiplexed single-cavity dual-comb sources. The system operates at a repetition rate of 250 MHz, and the relatively long pump pulse duration of around 900 fs leads to a high power per comb line of >60 μW in the idler at 3500 nm. The idler is tunable from 2900 nm to 4170 nm. The system runs at ...Other Conference Item -
Frequency performance of quantum cascade and interband cascade detectors
(2023)Proceedings of SPIE ~ Quantum Sensing, Imaging, and Precision MetrologyQuantum cascade detectors (QCD) are photovoltaic mid-infrared detectors based on intersubband transitions. The sub-picosecond carrier transport between subbands and the absence of a bias voltage make QCDs ideally suited for high-speed and room temperature operation. Interband cascade detectors (ICDs) combine interband optical transitions with fast intraband transport to achieve high-frequency and broad-wavelength operation at room ...Other Conference Item -
Femtosecond pulses from a backside-cooled 2-µm, GDD balanced InGaSb VECSEL
(2023)Proceedings of SPIE ~ Vertical External Cavity Surface Emitting Lasers (VECSELs) XIIWe report on a SESAM modelocked GDD balanced VECSEL embedding the active region in quaternary Al15Ga85AsSb. The GDD is flattened by a multilayer semiconductor dielectric top-coating allowing for stable femtosecond operation with a standard SESAM and high-quality YAG Brewster windows. We avoid tradeoffs that would limit the output power. This GDD balanced VECSEL is the next step towards higher level of integration: pump-DBR implementation, ...Other Conference Item -
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Dual-comb optically pumped semiconductor thin disk lasers at a center wavelength of 2 µm
(2023)OSA Technical Digest ~ Laser Congress 2023In this invited talk we present several milestone results that highlight the abilities of our dual-comb MIXSEL technology in the long-wavelength regime.Other Conference Item -
Shot-noise limited 1-GHz dual-comb supercontinuum from a single-cavity dual-comb and a single ANDi fiber
(2023)OSA Technical Digest ~ Laser Congress 2023We report a 1-GHz dual-comb supercontinuum generated from a single-cavity dual-comb in a single ANDi fiber. The combs exhibit record-low noise and approach the shot-noise limit in the performed RIN and dual-comb interferometry measurements.Other Conference Item