Haohua Tu

Summary

Affiliation: University of Illinois
Country: USA

Publications

  1. ncbi Optical frequency up-conversion by supercontinuum-free widely-tunable fiber-optic Cherenkov radiation
    Haohua Tu
    Biophotonics Imaging Laboratory, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana Champaign, Urbana, IL 61801, USA
    Opt Express 17:9858-72. 2009
  2. ncbi Nonlinear polarization dynamics in a weakly birefringent all-normal dispersion photonic crystal fiber: toward a practical coherent fiber supercontinuum laser
    Haohua Tu
    Biophotonics Imaging Laboratory, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana Champaign, Urbana, Illinois 61801, USA
    Opt Express 20:1113-28. 2012
  3. ncbi Ultraviolet-visible non-supercontinuum ultrafast source enabled by switching single silicon strand-like photonic crystal fibers
    Haohua Tu
    Biophotonics Imaging Laboratory, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana Champaign, Urbana, IL 61801, USA
    Opt Express 17:17983-8. 2009
  4. ncbi Compression of fiber supercontinuum pulses to the Fourier-limit in a high-numerical-aperture focus
    Haohua Tu
    Biophotonics Imaging Laboratory, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana Champaign, Urbana, Illinois 61801, USA
    Opt Lett 36:2315-7. 2011
  5. ncbi Scalar generalized nonlinear Schrödinger equation-quantified continuum generation in an all-normal dispersion photonic crystal fiber for broadband coherent optical sources
    Haohua Tu
    Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana Champaign, Urbana, Illinois 61801, USA
    Opt Express 18:27872-84. 2010
  6. ncbi Anomalous bending effect in photonic crystal fibers
    Haohua Tu
    Biophotonics Imaging Laboratory, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana Champaign, Urbana, IL 61801, USA
    Opt Express 16:5617-22. 2008
  7. ncbi Numerical analysis of gradient index lens-based optical coherence tomography imaging probes
    Woonggyu Jung
    University of Illinois, Beckman Institute for Advanced Science and Technology, Urbana, IL 61801, USA
    J Biomed Opt 15:066027. 2010
  8. ncbi Stabilization of continuum generation from normally dispersive nonlinear optical fibers for a tunable broad bandwidth source for optical coherence tomography
    Haohua Tu
    Biophotonics Imaging Laboratory, Bechman Institute for Advanced Science and Technology, University of Illinois at UrbanChampaign, Urbana Illinois 61801, USA
    Opt Lett 32:2037-9. 2007
  9. ncbi Dual-spectrum laser source based on fiber continuum generation for integrated optical coherence and multiphoton microscopy
    Benedikt W Graf
    University of Illinois at Urbana Champaign, Beckman Institute for Advanced Science and Technology, Department of Electrical and Computer Engineering, Biophotonics Imaging Laboratory, 405 North Mathews Avenue, Urbana, Illinois 61801, USA
    J Biomed Opt 14:034019. 2009
  10. ncbi Emergence of self-organized long-period fiber gratings in supercontinuum-generating optical fibers
    Haohua Tu
    Biophotonics Imaging Laboratory, Beckman Institute for Advanced Science and Technology, Department of Electrical and Computer Engineering, University of Illinois at Urbana Champaign, Urbana, IL 61801, USA
    Opt Lett 34:668-70. 2009

Detail Information

Publications11

  1. ncbi Optical frequency up-conversion by supercontinuum-free widely-tunable fiber-optic Cherenkov radiation
    Haohua Tu
    Biophotonics Imaging Laboratory, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana Champaign, Urbana, IL 61801, USA
    Opt Express 17:9858-72. 2009
    ..Appropriate selection of fiber parameters and pumping conditions efficiently suppresses the supercontinuum generation typically associated with Cherenkov radiation...
  2. ncbi Nonlinear polarization dynamics in a weakly birefringent all-normal dispersion photonic crystal fiber: toward a practical coherent fiber supercontinuum laser
    Haohua Tu
    Biophotonics Imaging Laboratory, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana Champaign, Urbana, Illinois 61801, USA
    Opt Express 20:1113-28. 2012
    ..We therefore propose the fabrication of polarization-maintaining DFDD-ANDi fibers to avoid these adverse effects in pursuing a practical coherent fiber SC laser...
  3. ncbi Ultraviolet-visible non-supercontinuum ultrafast source enabled by switching single silicon strand-like photonic crystal fibers
    Haohua Tu
    Biophotonics Imaging Laboratory, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana Champaign, Urbana, IL 61801, USA
    Opt Express 17:17983-8. 2009
    ....
  4. ncbi Compression of fiber supercontinuum pulses to the Fourier-limit in a high-numerical-aperture focus
    Haohua Tu
    Biophotonics Imaging Laboratory, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana Champaign, Urbana, Illinois 61801, USA
    Opt Lett 36:2315-7. 2011
    ..8-38.9 fs (FWHM), a central wavelength of ~1020 nm, an average power of 18-70 mW, and a repetition rate of 76 MHz, permitting the application of this source to nonlinear optical microscopy and coherently controlled microspectroscopy...
  5. ncbi Scalar generalized nonlinear Schrödinger equation-quantified continuum generation in an all-normal dispersion photonic crystal fiber for broadband coherent optical sources
    Haohua Tu
    Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana Champaign, Urbana, Illinois 61801, USA
    Opt Express 18:27872-84. 2010
    ..We also identify the nonlinear polarization effect that limits the bandwidth of these continuum pulses, and therefore report the path toward a series of attractive alternative broadband coherent optical sources...
  6. ncbi Anomalous bending effect in photonic crystal fibers
    Haohua Tu
    Biophotonics Imaging Laboratory, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana Champaign, Urbana, IL 61801, USA
    Opt Express 16:5617-22. 2008
    ..Bending near the fiber entrance dissipates the propagating seed of this leaky mode, preventing the leaky mode amplification and therefore enhancing the transmission of these pulses...
  7. ncbi Numerical analysis of gradient index lens-based optical coherence tomography imaging probes
    Woonggyu Jung
    University of Illinois, Beckman Institute for Advanced Science and Technology, Urbana, IL 61801, USA
    J Biomed Opt 15:066027. 2010
    ..Numerical results show that the adjustment of the maximum beam diameter and focusing angle at the end of the GRIN lens surface is very important for determining the optical performance parameters of the probe...
  8. ncbi Stabilization of continuum generation from normally dispersive nonlinear optical fibers for a tunable broad bandwidth source for optical coherence tomography
    Haohua Tu
    Biophotonics Imaging Laboratory, Bechman Institute for Advanced Science and Technology, University of Illinois at UrbanChampaign, Urbana Illinois 61801, USA
    Opt Lett 32:2037-9. 2007
    ..The performance deterioration due to the formation of other waveguides can be reversed by overwriting them with this particular waveguide...
  9. ncbi Dual-spectrum laser source based on fiber continuum generation for integrated optical coherence and multiphoton microscopy
    Benedikt W Graf
    University of Illinois at Urbana Champaign, Beckman Institute for Advanced Science and Technology, Department of Electrical and Computer Engineering, Biophotonics Imaging Laboratory, 405 North Mathews Avenue, Urbana, Illinois 61801, USA
    J Biomed Opt 14:034019. 2009
    ..Images of unstained in vivo human skin are also presented. This source extends the feasibility of this integrated imaging modality and will facilitate new investigations in in vivo microscopy, tissue engineering, and cell biology...
  10. ncbi Emergence of self-organized long-period fiber gratings in supercontinuum-generating optical fibers
    Haohua Tu
    Biophotonics Imaging Laboratory, Beckman Institute for Advanced Science and Technology, Department of Electrical and Computer Engineering, University of Illinois at Urbana Champaign, Urbana, IL 61801, USA
    Opt Lett 34:668-70. 2009
    ..The grating has a period dependent on the dielectric structure of the fiber and is therefore classified as a self-organized structure...
  11. ncbi Wave-breaking-extended fiber supercontinuum generation for high compression ratio transform-limited pulse compression
    Yuan Liu
    Biophotonics Imaging Laboratory, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana Champaign, Urbana, Illinois 61801, USA
    Opt Lett 37:2172-4. 2012
    ..4 fs (FWHM). The combination of high compression ratio (28×) and short pulse width represents a significant improvement over that attained in the wave-breaking-free regime...