1. Articles from Arun Anand

    1-3 of 3

    1. Swept-source digital holography to reconstruct tomographic images

      Explore opticsinfobase.org Tunable Sources
      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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      Mentions: Dalip Singh Mehta Satish Kumar Dubey Chandra Shakher

    2. Full-field swept-source optical coherence tomography with Gaussian spectral shaping

      Explore SPIE Digital Library Tunable Sources
      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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      Mentions: Dalip Singh Mehta Satish Kumar Dubey Chandra Shakher

    3. Simultaneous topography and tomography of latent fingerprints using full-field swept-source optical coherence tomography

      Explore Institute of Physics Other Non-Medical
      Simultaneous topography and tomography of latent fingerprints using full-field swept-source optical coherence tomography 1 Laser Applications and Holography Laboratory, Instrument Design Development Centre, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110 016, India 2 Institute for Plasma Research, Bhat, Gandhinagar, 382428, India E-mail: dsmehta@iddc.iitd.ac.in Abstract. We demonstrate simultaneous topography and tomography of latent fingerprints using full-field swept-source opti
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      Mentions: Dalip Singh Mehta Satish Kumar Dubey Indian Institute of Technology at Delhi
    1-3 of 3
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    1. (3 articles) Indian Institute of Technology at Delhi
    2. (3 articles) Dalip Singh Mehta
    3. (3 articles) Satish Kumar Dubey
    4. (2 articles) Chandra Shakher

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