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  • Aadhi, A.; Apurv Chaitanya, N.; Jabir, M. V.; Vaity, Pravin; Singh, R. P.; Samanta, Goutam Kumar (Nature publishing group, 2016-05)
    Airy beam, a non-diffracting waveform, has peculiar properties of self-healing and self-acceleration. Due to such unique properties, the Airy beam finds many applications including curved plasma wave-guiding, micro-particle ...
  • Aadhi, A.; Apurv Chaitanya, N.; Jabir, M. V.; Singh, Ravindra P.; Samanta, Goutam Kumar (Optics InfoBase, 2015)
    We report on experimental demonstration of an all-periodically poled, continuous-wave (CW), high-power, single-frequency, ultra-violet (UV) source. Based on internal second-harmonic-generation (SHG) of a CW singly resonant ...
  • Apurv Chaitanya, N.; Jabir, M. V.; Samanta, Goutam Kumar (Springer, 2016-04)
    We report on efficient nonlinear generation of ultrafast, higher order "perfect" vortices at the green wavelength. Based on Fourier transformation of the higher order Bessel-Gauss (BG) beam generated through the combination ...
  • Apurv Chaitanya, N.; Aadhi, A.; Jabir, M. V.; Samanta, Goutam Kumar (OSA Publishing, 2015-06)
    We report on frequency-doubling characteristics of high-power, ultrafast optical vortex beams in a nonlinear medium. Based on single-pass second-harmonic generation (SHG) of optical vortices in 1.2 mm long bismuth triborate ...
  • Aadhi, A.; Apurv Chaitanya, N.; Singh, Ravindra P.; Samanta, Goutam Kumar (Optical Society of America, 2014-06)
    We report the development of a compact, high-power, continuous-wave, single-frequency, ultraviolet (UV) source with extended wavelength tunability. The device is based on single-pass, intracavity, second-harmonic-generation ...
  • Apurv Chaitanya, N.; Aadhi, A.; Jabir, M. V.; Samanta, Goutam Kumar (OSA Publishing, 2015-09)
    We report on the development of a high-power, high-repetition-rate, fiber laser based source of ultrafast ultraviolet (UV) radiation. Using single-pass second-harmonic generation and subsequent sum-frequency generation ...
  • Apurv Chaitanya, N.; Jabir, M. V.; Banerji, Jagannath; Samanta, Goutam Kumar (Nature Publishing Group, 2016-09)
    Hollow Gaussian beams (HGB) are a special class of doughnut shaped beams that do not carry orbital angular momentum (OAM). Such beams have a wide range of applications in many fields including atomic optics, bio-photonics, ...
  • Apurv Chaitanya, N.; Aadhi, A.; Singh, Ravindra P.; Samanta, Goutam Kumar (Optical Society of America, 2014-08)
    We report on experimental realization of optimum focusing condition for type-I second-harmonic generation (SHG) of high-power, ultrafast laser in “thick” nonlinear crystal. Using single-pass, frequency doubling of a 5 W ...
  • Apurv Chaitanya, N.; Chaitanya Kumar, S.; Aadhi, A.; Samanta, Goutam Kumar; Ebrahim-Zadeh, M. (Nature Publishing Group, 2016-08)
    We report on the first realization of an ultrafast Airy beam optical parametric oscillator (OPO). By introducing intracavity cubic phase modulation to the resonant Gaussian signal in a synchronously-pumped singly-resonant ...
  • Apurv Chaitanya, N.; Devi, Kavita; Samanta, Goutam Kumar; Ebrahim-Zadeh, M.; Suddapalli, Chaitanya Kumar D. (OSA Publishing, 2016-01)
    We report on the generation of ultrafast vortex beams in the deep ultraviolet (DUV) wavelength range at 266 nm, for the first time to our knowledge. Using a Yb-fiber-based green source in combination with two spiral phase ...

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