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Suppression of detrimental modal interference effects within a cladding-pumped multimode thulium fiber amplifier is achieved using variable bandwidth seed source. The amplifier produced pulse energies of 1.1mJ and peak powers over 20kW at 1956nm.
We present the first demonstration of nanosecond-pulsed fiber MOPA systems seeded by semiconductor laser diodes at 2 µm incorporating arbitrary pulse shaping capabilities, achieving up to 1.0 mJ (12.5 kHz, 100 ns) pulse energy.
We present simple and efficient laser schemes based on newly developed Er-doped fibers cladding pumped at 976 nm. 103 W CW-power amplifier with 37 % conversion efficiency and 1.5 mJ-pulse energy nanosecond laser were demonstrated.
We report a high power monolithic nanosecond pulsed fiber laser at 1064nm in MOPA configuration. More than 300W average power was achieved for 475 ns pulses at repetition rate of 100 kHz.
We report a high peak power monolithic nanosecond pulsed fiber laser in MOPA configuration. The system can produce ∼ 709 kW peak power for 3.3 ns fiber laser pulses at 10 kHz repetition rate.
We report on a narrow-linewidth master oscillator fiber amplifier system continuously tunable from 1010nm to 1086nm, delivering ns pulses with 1mJ energy over the entire band. Tunable second-harmonic generation in the visible is also presented.
A novel high pulse-energy Yb-doped all-fiber dual-cavity laser with large core-diameter fiber-based passive Q-switcher is reported. The monolithic fiber oscillator generates pulses with peak power of 3.4 kW and single pulse energy of 484 µJ.
We present the shortest pulses of any modelocked thin disk laser (TDL): a SESAM modelocked Yb:CALGO TDL generates 62-fs pulse duration at 5.1 W average power and we present new noise characterization.
A diode-pumped Yb:CLNGG laser is mode-locked with a single-walled carbon nanotube saturable absorber achieving pulse durations as short as 90 fs at ∼1049 nm and maximum average output power of 90 mW at 83 MHz.
An Yb:YAG SESAM-modelocked thin-disk laser delivering 1.07 ps pulses with record-high pulse energy of 80 µJ at 242 W of average power is presented. Improved SESAM designs and nonlinearity limits are explored towards multi-100 µJ modelocked oscillators.
We report efficient and robust Kerr-lens mode-locking of single-mode and tapered diode-pumped Cr:LiSAF lasers by using gain-matched output couplers. Sub-15-fs pulses were generated with peak powers above 60-kW and optical-to-optical conversion efficiencies up to 21%.
We demonstrate the first II–VI based short-wave (λ ≤ 4 µm) Quantum Cascade Detector. Peak responsivity and background limited detectivity of 0.1 mA/W and 2.5×1010 cm√Hz/W, respectively, were measured at 80 K.
We review recent results on all-optical regeneration of phase encoded signals based on phase sensitive amplification achieved by avoiding phase-to-amplitude conversion in order to facilitate the regeneration of amplitude/phase encoded (QAM) signals.
We observe an effective magnetic field for photons using an on-chip silicon-based Ramsey-type interferometer. This interferometer generates a direction-dependent phase which corresponds to a magnetic field of 0.2 Gauss in an Aharonov-Bohm configuration for electrons.
We demonstrate a new method to extract the electronic carrier-induced loss and coupling coefficients of modern thermo-optic and electro-optic silicon Mach-Zehnder interferometer based 2x2 switches (Sandia, IBM and Kotura-Oracle) from the transmission spectra.
The state-of-the art for control of microring based devices is tuningjust resonant phase. We introduce an extremum-seeking discrete-multitone adaptive controller, concurrently tuning both resonant phase and second coupling phase parameter optimizing microring critical coupling. OCIS codes: (230.5750) Resonators; (230.4110) Modulators; (130.3120) Integrated optics devices; Extremum-seek control
With Additive Manufacturing AM, parts can be manufactured for design instead of being designed for manufacture. This tutorial introduces the two laser based AM processes, Selective Laser Melting SLM and Laser Material Deposition LMD.
A high-efficiency continuous-wave laser-diode-pumped Yb:YAG laser has been realized at room temperature by high intensity pumping. The slope efficiency and optical-to-optical conversion efficiency were 77 % and 72 % for the absorbed pump power, respectively.
We report on the large Kerr induced wavelength shift observed in our hydrogenated amorphous silicon microresonators and demonstrate their use for all-optical modulation and switching on picosecond time scales with only subpicojoule pulse energies.
The scintillation yield of rare-earth doped LaF3 nanoparticles (NPs) was experimentally measured. Taken together with evidence of FRET between NPs and covalently bound photosensitizer molecules, this suggests a route to combine radiation and photodynamic therapy.
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