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We present a gain-switched-diode-seeded 1034.5-nm master oscillator power amplifier, employing direct amplification through standard commercial Yb3+-doped fibres to generate 15.6µJ-pulse-energy, 126kW-peak-power, picosecond pulses with 3dB spectral bandwidth of 0.87nm.
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.
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.
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.
A doubly-resonant AgGaSe2 mid-infrared optical parametric oscillator (OPO) is synchronously pumped by a hybrid 2 µm Er:fiber/Tm:fiber femtosecond mode-locked laser. The OPO produces spectra ranging from 3–5 µm. Numerical simulations confirm the observed behavior.
We investigated quarter-laser-cycle oscillations in the transient absorption signal of attosecond pulse trains and infrared pulses interacting in helium. We discuss their physical origin and show their usefulness for experimental delay-zero calibration in attosecond science.
In the strong coupled cavity optomechanics, we find the island structure in the temporal evolution map of mean phonon number. Analytical results are provided to obtain the optimal cooling limits with the frequency matching condition.
Following the idea of optical analogy to electronic systems, harmonic oscillations are spatially mimicked in waveguide arrays. We study and demonstrate the oscillations of light in AlGaAs waveguide arrays,
New PPMgLN arrangement fabricated from X-axis Czochralski-grown crystal was proposed to improve a laser-beam distortion problem after passing the PPMgLN device. Availability of periodic poling in the new arrangement could be confirmed in 5-mm-thick MgLN.
Mid-infrared (3–5 µm) pulses with up to 207 mJ energy at 1 Hz repetition rate are produced using nonlinear conversion in a ZnGeP2-based master oscillator-power amplifier, pumped by a cryogenic Ho:YLF oscillator.
We demonstrate a chip-scale slot-type photonic crystal optomechanical oscillator fully integrated with an on-chip waveguide Ge photoreceiver, which exhibits high-harmonic tunable RF oscillations and high-quality optical resonances with controlled detuned continuous-wave laser drive.
We design and fabricate a 2 × 2 optomechanical oscillator array. We show the onset of synchronized mechanical oscillations when the array is excited by a single continuous wave laser.
We demonstrate a nanotube mode-locked fiber laser with low repetition rate (244 kHz), enabling supercontinuum generation in photonic crystal fiber spanning 600 to 2000 nm, at a low average pump power of 87 mW.
We compare dynamical properties of ground and excited state emission from 1.31 µm quantum-dot lasers. Dichroic facet mirrors ensure oscillations at either ground or excited state. Maximum bandwidths observed are 10.51 and 16.25 GHz, respectively.
GaAs1−xBix laser diodes (LDs) with low temperature dependence of the oscillation wavelength (dλ/dT) are demonstrated. The value dλ/dT for a GaAs0.97Bi0.03 LD was as low as 0.16 nm/K. This reduction is attributed to a reduction in the temperature coefficient of the band gap.
Using a zero-offset carrier-envelope locking technique, we have demonstrated that multiple pulse sequences of different colors from a femtosecond optical parametric oscillator can be coherently combined to synthesize a near-octave-spanning composite frequency comb.
THz radiation was generated by mixing idler-idler waves from coupled optical parametric oscillators based on stacked KTP plates. Power enhancement, noise reduction, and linewidth narrowing have been attributed to noise reduction between idler waves.
We use intense broadband THz pulses to excite underdoped YBCO exhibiting competing superconducting and charge density wave ground states. We observe pronounced coherent oscillations at 1.85 and 2.65THz, attributed to renormalized low-energy phonon modes.
Kerr-lens mode-locking (KLM) in Yb:CALGO has been demonstrated by means of a high-brightness optical pumping with an Yb:fiber laser. Stable 37 fs pulses are produced with an average power of 1.5 W.
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