1. Articles from Gyanendra Sheoran

    1-2 of 2
    1. Swept-source digital holography to reconstruct tomographic images

      Swept-source digital holography to reconstruct tomographic images
      We present what we believe to be a new method of swept-source digital holography using a superluminescent diode (SLD) as a broadband light source and an acousto-optic tunable filter (AOTF) as a frequency tunable device. The swept source consists of an SLD as a broadband source in conjunction with the AOTF as the frequency tuning device in the wavelength range of 800–870 nm. Since the AOTF is an electronically controlled device, frequency tuning can be achieved without mechanical movement . The angular spectrum approach to the scalar diffraction theory is used to reconstruct the images for each wavelength. Applications of ...
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    2. Full-field swept-source optical coherence tomography with Gaussian spectral shaping

      Satish Kumar Dubey, Gyanendra Sheoran, Tulsi Anna et al. A swept source system was realized in the wavelength range of 810-875 nm with the combination of a broad-band superluminescent diode (SLD) and an acousto-optic tunable filter (AOTF) as a frequency-tuning device. SLD has two spectral centers at 820 nm and 845 nm with spectral bandwidth (FWHM) of arou ... [Proc. SPIE 7155, 71551F (2008)] published Fri Oct 3, 2008.
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    1-2 of 2
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  2. Topics in the News

    1. (2 articles) Indian Institute of Technology at Delhi
    2. (2 articles) Chandra Shakher
    3. (2 articles) Dalip Singh Mehta
    4. (2 articles) Satish Kumar Dubey
    5. (2 articles) Zhejiang University
    6. (2 articles) Raju Poddar
    7. (1 articles) Duke University
    8. (1 articles) Anthony N. Kuo
    9. (1 articles) Joseph A. Izatt
    10. (1 articles) Jon Holmes
    11. (1 articles) Michelson Diagnostics
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