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We demonstrate a record-wide mid-IR comb using Tm-fiber-laser-pumped near-degenerate GaAs OPO. By varying intracavity dispersion, we observe a transition from a single-comb to a two-comb state, where two combs are offset by a constant value.
We report on a novel 18-TW peak power light source delivering pulses with 80-mJ energy and 4.5-fs duration. The system is based on optical parametric synthesizer principle involving multi-color optical parametric chirped pulse amplification stages.
The endeavour of generating shorter and shorter light pulses lead to the optical parametric chirped pulse amplification (OPCPA) technique, which provides considerable broader gain bandwidth corresponding to a pulse duration of one to three optical cycles. Systems with such a short duration and multi-terawatt to petawatt power levels provide a unique tool for attosecond [1] and laser-plasma physics...
An experimental investigation on the laser performance of an α-oriented Tm,Ho: YAIO3 crystal end-pumped by a wavelength tunable Ti:Sapphire laser is presented in this paper. Single- and dual-wavelength operations of Tm,Ho:YAIO3 lasers have been investigated in detail. Maximum output powers of 890mW at 2119nm, 836mW at 2103nm and 487mW at 2130nm for the α-oriented Tm,Ho:YAIO3 crystal have been obtained,...
Effective diode-pumped cw tunable laser action of a new crystal Yb3+:Lu2Si2O7 (LPS) is demonstrated for the first time to our knowledge. The advantage of Yb: LPS is the presence of effective low-symmetry monoclinic structure and its single crystallographic site, which are benefit for the low threshold and high output energy. With a 5-at% Yb: LPS sample, we achieved 2.22 W output power at 1070 nm....
Diode-pumped stable CW mode-locked laser in Yb:LuAG crystal was demonstrated. The pulse duration of 7.63 ps was achieved without any negative dispersion elements. With pump of 8 W, output power was 610 mW with repetition rate of 86 MHz.
Using a novel broadband Yb-doped crystal close-loop cooled at -130degC we demonstrate a 2-6-W multi-kilohertz amplifier delivering sub-200-fs pulses with energies up to 2 mJ. This technology is straightforwardly scalable toward a kHz-repetition-rate multi-mJ output.
Absorption, photoluminescence spectra and CW lasing parameters of an Yb3+- and Na+-codoped CaF2 laser crystal are measured in the temperature range from 5 K to 290 K. The crystal appears to be a promising host for broadband multi-mJ kHz CW-pumped regenerative amplification.
We report on the first demonstration of 640 Gbit/s wavelength conversion by FWM. This is demonstrated using a novel elliptic core PM-HNLF giving sufficient FWM conversion bandwidth.
Result of diode-pumped cw laser action of Yb:GYSO are demonstrated for the first time. The laser wavelength could be tuned from 1030 to 1089 nm, and a slope efficiency of 57% was achieved.
A diode pumped cw laser operation based on 5-at.% doped Yb:GSO crystal was reported. The optical conversion efficiency of 64.5% at 1089 nm was achieved and the tuning range extends to ~65 nm.
We observe that n-GaAs terahertz emitters with as-grown Be-doped low-temperature-grown (LTG)-GaAs layers exhibits greater radiation power than devices with or without undoped LTG-GaAs layers and explain it by the enhanced electric field in the surface depletion layer.
We report on the growth of ZnMgSSe/ZnSSe/ZnSe heterostructures in a low pressure metalorganic vapor phase epitaxy (MOVPE) system at 400 hPa and a growth temperature of 330°C. The precursor combination was dimethylzinc(triethylamine adduct), ditertiarybutylselenium, ditertiarybutylsulphur, and bismethylcyclopentadienylmagnesium. This combination allows the reproducible adjustment of the alloy composition...
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