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Journals and Conferences
Recent advent of light-sheet fluorescent microscopy (LSFM) has revolutionized three-dimensional biological imaging with high temporal resolution and minimal photodamage, enabling long-term fluorescence imaging of tissues and small organisms [1-2]. By combining two-photon fluorescence excitation with LSFM, Truong et al.  have created a two-photon digital… (More)
We report 37.4 fs pulse generation from a ring-cavity Er:fiber laser at a repetition rate of 225 MHz. The spectral bandwidth of the pulse is 135 nm. The single-pulse energy is 0.31 nJ.
Advances in light-sheet microscopy have enabled the fast three-dimensional (3D) imaging of live cells and bulk specimens with low photodamage and phototoxicity. Combining light-sheet illumination with super-resolution imaging is expected to resolve subcellular structures. Actually, such kind of super-resolution light-sheet microscopy was recently… (More)
Total-internal-reflection fluorescence (TIRF) microscopy provides high optical-sectioning capability and a good signal-contrast ratio for structures near the surfaces of cells. In recent years, several improvements have been developed, such as variable-angle TIRF (VA-TIRF) and spinning TIRF (sp-TIRF), which permit quantitative image analysis and address… (More)
We demonstrate a new two-photon scanned light-sheet microscopy with diffraction-limited thickness and tailorable illumination area from 50×50 μm<sup>2</sup> to 500×500 μm<sup>2</sup>, capable of multi-scale live imaging in one setup.
Developments in miniaturized microscopes have enabled visualization of brain activities and structural dynamics in animals engaging in self-determined behaviors. However, it remains a challenge to resolve activity at single dendritic spines in freely behaving animals. Here, we report the design and application of a fast high-resolution, miniaturized… (More)
Many receptor-mediated endocytic processes are mediated by constitutive budding of clathrin-coated pits (CCPs) at spatially randomized sites before slowly pinching off from the plasma membrane (60-100 s). In contrast, clathrin-mediated endocytosis (CME) coupled with regulated exocytosis in excitable cells occurs at peri-exocytic sites shortly after vesicle… (More)
17 The insulin-secreting cells generated from stem cells in vitro are less glucose responsive than 18 primary β-cells. To search for the missing ingredients that are needed for β-cell maturation, we 19 have longitudinally monitored function of every β-cell in Tg (ins:Rcamp1.07) zebrafish embryos 20 with a newly-invented two-photon light-sheet microscope. We… (More)
Simulation and experiment results are presented for sub-40 fs pulse generation in Er:fiber ring lasers.
Pre-chirp technique was used in an Nd-doped fiber amplifier to optimize high-quality 910 nm pulses with the pulses width of 114 fs and pulse energy of 4.4 nJ. The in vivo zebrafish imaging results from our totally home-made microscopy proves our femtosecond Nd fiber laser an ideal source in two-photon microscopic imaging.