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A diode pumped Yb:YAG regenerative amplifier has been developed for short pulse generation. Average output power of 10 W was achieved at pulse repetition rate of 100 kHz with 6.2 ps pulse width.
Highly efficient cavity dumping of Yb:YAG laser has been realized at room temperature with the optical to optical conversion efficiency of 72% for the absorbed pump power.
A cladding-pumped, high-power amplifier was built incorporating a star-shaped, Ybdoped filter fiber. Pulsed amplifier measurements demonstrate strong suppression of stimulated Raman scattering accomplished by a special index profile with an up-doped ring.
We present characterization of a fiber laser based on newly developed erbium and ytterbium doped double-clad fiber with cross section tailored for direct splicing with the pump and signal fibers.
Heating a photo-darkened ytterbium fiber causes a recovery in spectral transmission to the pre-darkened state. Exposure to H2 at high temperatures causes a permanent change in the visible transmission identical to that caused by photo-darkening.
A light source using sum-frequency generation is developed for the ytterbium clock transition at 578 nm. Doppler-free spectroscopy of iodine lines near the Yb clock transition and frequency stabilization are demonstrated with the light source.
The development of a high-power diode-pumped continuous-wave Yb:KGW laser is reported. The laser delivered 6 W of average power at 1049 nm and was tunable between 1035 and 1076 nm with more than 1.3 W of output power.
Widely wavelength-tunable ultrashort pulses are generated using passively modelocked Yb-doped fiber laser and photonic crystal fiber. Soliton and anti-stokes pulses are generated in wavelength region of 1.0-1.7 mum and 0.6-0.7 mum, respectively.
All-fiber chirped-pulse amplification based on a large-mode-area Er:Yb-doped photonic-crystal fiber is presented. A dispersion-variable hybrid fiber stretcher compensates the peculiar dispersion of the hollow-core photonic-bandgap fiber compressor yielding transform-limited 440-fs pulses with 1-W average power.
We demonstrate the use of a prism-grating sequence to reduce third-order dispersion inside a modelocked Yb fiber laser. 33-fs pulses, the shortest from a fiber oscillator, can be generated with extremely clean profiles.
The Lucia laser will deliver a 100 Joules-10 ns-10 Hz pulse train from ceramic/crystal Yb:YAG using 4400 QCW diode laser bars (440 Joules). Petwatt-class laser chain scheme using Lucia as a pump source is described.
Diffraction-limited nanosecond pulse generation with MW-peak powers and multi-mJ-energies has been explored using 80-mum core Yb-doped fibers, demonstrating 1-MW peak power pulses with 85-W of average power at 100-kHz and 1.56-MW peak at 50-Hz.
We experimentally demonstrate a compact, practical, self-contained continuous-wave supercontinuum laser based on the addition of a highly nonlinear fiber inside the Er/Yb-codoped fiber ring resonator clad-pumped by low-cost multi-mode 975 nm laser diodes. A supercontinuum of a bandwidth larger than 470 nm is readily achieved.
We report on an Ytterbium gain band, holey fiber based modulation instability laser. The all fiber integrated source produces a 40 GHz train of 4 ps pulses at a wavelength of 1064 nm.
We report a tunable laser source emitting in the visible (530 nm, 630 nm) and the near infrared (775 nm, 1060 nm, and 1550 nm) regions by frequency summation of a dual wavelength Er/Yb co-doped fiber laser.
Designed for low nonsaturable loss, low saturation fluence and low modulation depth, we apply single wall carbon nanotube to the passive mode locking of a solid-state Er:Yb:glass laser at 1535 nm, generating 1.8 ps pulses.
We experimentally demonstrate the active phase control of four Er-Yb doped double-clad single polarized mode fiber amplifiers and we report on theoretical analysis to coherently combine large number of beams.
Power scalable approach for THz generation is demonstrated using optical rectification in GaP pumped by a high power ultrafast Yb-doped fiber amplifier. 1.8 muW THz radiation is obtained from 2.6 W pump power.
Synchronization of actively Q-switched Erbium and Ytterbium doped fiber lasers with a single electrostatically actuated deformable metallic micro-mirror is reported. Sum frequency generation in PPLN crystal leading to a tunable red radiation is demonstrated.
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