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  • Sharma, Varun; Samanta, G. K.; Chaitanya Kumar, S.; Singh, R. P.; Ebrahim-Zadeh, M. (Optical Society of America, 2019-10)
    We report a continuous-wave (cw) optical parametric oscillator (OPO) generating optical vortices tunable in the ultraviolet (UV). Based on MgO:sPPLT as the nonlinear crystal, the singly resonant OPO is pumped by a cw vortex ...
  • Sharma, Varun; Chaitanya Kumar, S.; Aadhi, A.; Ye, H.; Samanta, Goutam Kumar; Ebrahim-Zadeh, M. (Springer Nature Publishing, 2019-07)
    Vector-vortex beams, having both phase and polarization singularities, are of great interest for a variety of applications. Generally, such beams are produced through systematic control of phase and polarization of the ...
  • 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 ...

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