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Strong-field ultrafast photoemission was studied by propagating surface plasmons generated on gold metal layer in Kretschmann configuration at 3.1 microns wavelength. Tunneling photoemission and electron acceleration was demonstrated at an unprecedently low laser intensity (1–5 GW/cm2).
We proposed and implemented a magnetic-driven side-imaging endoscopic probe for optical coherence tomography. The probe can achieve 360-degree unobstructed circumferential imaging with a 1.4-mm outer diameter, and thus suitable for many endoscopic applications.
We present a dual modal system combining noncontact photoacoustic tomography and optical coherence tomography. The proposed system, composed of fiber-optic networks, uses one probing beam path, which provides the noncontact measurements. Multimodal images of phantoms were acquired to demonstrate the capability of the proposed system.
In this paper, we constructed sensitive second-harmonic-generation (SHG) microscopy equipped with a 10-fs Ti:Sapphire laser and succeeded to visualize collagen fibers produced by the cultured osteoblasts in situ.
We present a laser Doppler perfusion imaging model to map the perfusion in melanoma and non-melanoma skin cancers. We numerically investigate the use of neovascularization as an early detection method using Monte Carlo method to simulate the interactions of photons and skin tissue.
We studied the concept of EDP amplification for the 10–100 PW level of the three ELI-pillars laser systems. The design of EDP — duty amplifiers required to achieve these parameters was done and will be reported.
We present an approach that maintains full optical resolution in imaging deep within scattering media. Imaging depth of 11.5 times the scattering mean free path was achieved with near-diffraction-limit resolution of 1.5 μm.
The latest methods to simultaneously characterize and synthesize ultrafast optical arbitrary waveform in the scalar and vectorial regimes are reviewed.
We demonstrate a new scheme of spatially and temporally resolved all-optical wavelength-multiplexed imaging (STRAW) in the 4f configuration with a DOE and a band-pass filter. Using a frequency chirped pulse, we realize single-shot ultrafast imaging.
Passively mode-locked lasers provide a convenient way to generate ultrafast laser pulses with high peak power. In this report, we gave introduction of progress of passively mode-locked mid-infrared solid-state lasers at 2 μm region in our laboratory.
Current progress in blue and green InGaN laser diodes (LDs) realizes direct pumping of solid-state lasers. Performances of Pr3+-doped LiYF4 visible lasers and Ti3+-doped AhO3 lasers pumped by 440-nm and 532-nm LDs respectively are reviewed.
Maximum output power of 285 mW is achieved at 2080 nm (Ho3+ emission) with a slope efficiency of 8.3% in a compact intracavity-pumped microchip Ho-laser using stacked Tm:KLuW / Ho:KLuW Nε-cut crystals.
We demonstrate 22 W average power mid-IR supercontinuum (1900nm-3600nm) generations in a single mode ZBLAN fiber pumped by nanosecond pulses from diode-seeded Tm-doped MOPA.
The characteristics of a room-temperature Fe2+: ZnSe laser based on a polycrystalline sample pumped by a non-chain HF laser were studied. The Fe2+: ZnSe laser energy was E = 15 mJ at the efficiency with respect to the absorbed HF laser energy ηab=15%.
The peak frequency stability in the time domain is examined in the monolithic and discrete component conditions. The RF peak drift is two times less in the monolithic case than that of the discrete component.
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