Staff


Dr Vandna Gokhroo 

Staff Scientist (2019-2021)

Work at OIST

  • Spin selection in single-frequency two-photon excitation of alkali-metal atoms 
    KS Rajasree, RK Gupta, V Gokhroo, F Le Kien, T Nieddu, T Ray, S Nic Chormaic and G Tkachenko
    Phys. Rev. Res. 2, 033341 (2020) 

  • Observation of the 87Rb 5S1/2 to 4D3/2 electric quadrupole transition at 516.6 nm mediated via an optical nanofibre
    T Ray, RK Gupta, V Gokhroo, JL Everett, T Nieddu, KS Rajasree and S Nic Chormaic
    New J. Phys. 22, 062001 (2020) 

Dr Priscila Romagnoli 

Postdoctoral Scholar (2018-2020)

Work at OIST

Dr Jonathan Ward 

Staff Scientist (2012-2020)                             

Work at OIST

  • Fabrication of optical nanofibre-based cavities using focussed ion-beam millling - A review 
    P Romagnoli, M Maeda, JM Ward, VG Truong and S Nic Chormaic
    Appl. Phys. B  126, 111 (2020)

  • Polarization-controlled cavity input-output relations
    F Lei, JM Ward, P Romagnoli and S Nic Chormaic
    Phys. Rev. Lett. 124, 103902 (2020)

  • Enhanced directional coupling of light with a whispering gallery microcavity 
    F Lei, G Tkachenko, X Jiang, JM Ward, L Yang and S Nic Chormaic
    ACS Photonics 7, 361 (2020)

  • Toward real-time monitoring and control of nanoparticle properties with a microbubble resonator spectrometer*
    LT Hogan, EH Horak, JM Ward, KA  Knapper, S Nic Chormaic, and RH Goldsmith
    ACS Nano 13, 12743 (2019)

  • Raman laser switching induced by cascaded light scattering
    S Kasumie, F Lei, JM Ward, X Jiang, L Yang and S Nic Chormaic
    Laser Photonics Rev. 13, 1900138 (2019)

  • Excitation of whispering-gallery-modes with a "point-and-play" fiber-based, optical nano-antenna 
    JM Ward, F Lei, S Vincent, P Gupta, SK Mondal, J Fick and S Nic Chormaic
    Opt. Lett. 44, 3386 (2019)

  • Complete polarization control for a nanofiber waveguide using directional coupling
    F Lei, G Tkachenko, JM Ward and S Nic Chormaic
    Phys. Rev. Appl. 11, 064041 (2019)

    and more.

Patents

Dr Jean-Baptiste Ceppe 

Postdoctoral Scholar (2019-2020)                                                     

Publications

  • Dynamical analysis of modal coupling in rare-earth whispering-gallery-mode microlasers*
    J-B Ceppe, P Féron, M Mortier and Y Dumeige
    Phys. Rev. Appl. 11, 064028 (2019)

     

Dr Fuchuan Lei   

Postdoctoral Scholar (2016-2019)

Work at OIST

  • Polarization-controlled cavity input-output relations
    F Lei, JM Ward, P Romagnoli and S Nic Chormaic
    Phys. Rev. Lett. 124, 103902 (2020)

  • Enhanced directional coupling of light with a whispering gallery microcavity 
    F Lei, G Tkachenko, X Jiang, JM Ward, L Yang and S Nic Chormaic
    ACS Photonics 7, 361 (2020)

  • Polarisation control for optical nanofibres by imaging through a single lens (Editors' Suggestion)
    G Tkachenko, F Lei and S Nic Chormaic
    J. Opt. 21, 125604 (2019)

  • Raman laser switching induced by cascaded light scattering 
    S Kasumie, F Lei, JM Ward, X Jiang, L Yang and S Nic Chormaic
    Laser Photonics Rev. 13, 1900138 (2019)

  • Excitation of whispering-gallery-modes with a "point-and-play" fiber-based, optical nano-antenna 
    JM Ward, F Lei, S Vincent, P Gupta, SK Mondal, J Fick and S Nic Chormaic
    Opt. Lett. 44, 3386 (2019)

  • Complete polarization control for a nanofiber waveguide using directional coupling
    F Lei, G Tkachenko, JM Ward and S Nic Chormaic
    Phys. Rev. Appl. 11, 064041 (2019)

    and more.

Patents

Dr Tridib Ray 

Postdoctoral Scholar (2015-2019)                                                    

Work at OIST

  • Spin selection in single-frequency two photon excitation of alkali-metal atoms
    KS Rajasree, RK Gupta, V Gokhroo, F Le Kien, T Nieddu, T Ray, S Nic Chormaic and G Tkachenko
    Phys. Rev. Res. 2, 033341 (2020) 

  • Observation of the 87Rb 5S1/2 to 4D3/2 electric quadrupole transition at 516.6 nm mediated via an optical nanofibre
    T Ray, RK Gupta, V Gokhroo, JL Everett, T Nieddu, KS Rajasree and S Nic Chormaic
    New J. Phys. 22, 062001 (2020) 

  • Generation of cold Rydberg atoms at submicron distances from an optical nanofiber (Rapid Communication)
    KS Rajasree, T Ray, K Karlsson, JL Everett and S Nic Chormaic
    Phys. Rev. Res. 2, 012038(R) (2020)

  • Simple, narrow, and robust atomic frequency reference at 993 nm exploiting the rubidium (Rb) 5S1/2 to 6S1/2 transition using one-color two-photon excitation 
    T Nieddu, T Ray, KS Rajasree, R Roy and S Nic Chormaic
    Opt. Express 27, 6528 (2019)

  • Enhancement of the quadrupole interaction of an atom with guided light of an ultrathin optical fiber
    F Le Kien, T Ray, T Nieddu, T Busch and S Nic Chormaic
    Phys. Rev. A 97, 013821 (2018)

Dr Xue Han 

Postdoctoral Scholar (2015-2018)

Work at OIST

Dr Wenfang Li 

Postdoctoral Scholar (2016-2018)

Work at OIST

  • Tailoring a nanofiber for enhanced photon emission and coupling efficiency from single quantum emitters
    W Li, J Du and S Nic Chormaic
    Opt. Lett. 43, 1674 (2018)

  • Optical nanofiber-based cavity induced by periodic air-nanohole arrays
    W Li, J Du, VG Truong and S Nic Chormaic
    Appl. Phys. Lett. 110, 253102 (2017)

Dr Jinjin Du 

Postdoctoral Scholar (2015-2018)

Work at OIST

  • Tailoring a nanofiber for enhanced photon emission and coupling efficiency from single quantum emitters
    W Li, J Du and S Nic Chormaic
    Opt. Lett. 43, 1674 (2018)

  • Optical nanofiber-based cavity induced by periodic air-nanohole arrays
    W Li, J Du, VG Truong and S Nic Chormaic
    Appl. Phys. Lett. 110, 253102 (2017)

Dr Yong Yang 

Postdoctoral Scholar (2011-2017)

Work at OIST

  • Nanoparticle sensing beyond evanescent field interaction with a quasi-droplet microcavity
    JM Ward, Y Yang, F Lei, X-C Yu, Y-F Xiao and S Nic Chormaic
    Optica 5, 674 (2018)
  • Toward visible frequency comb generation using a hollow WGM resonator (invited review)
    S Kasumie, Y Yang, JM Ward and S Nic Chormaic
    Rev. Las. Engin. 46, 92 (2018)

  • Cavity ring-up spectroscopy for dissipative and dispersive sensing in a whispering gallery mode resonator
    Y Yang, R Madugani, S Kasumie, JM Ward and S Nic Chormaic
    in book: Exploring the World with the Laser, pp. 629-646, Springer International Publishing, Meschede, Dieter, Udem, Thomas, Esslinger, Tilman (Eds.) (2018)

    and more.

Patents

Dr Aysen Gurkan 

Research Technician (2016-2017)

Research Technician

Mr Vikraman Karunanidhi 

Research Technician (2015-2016)

Research Technician

Dr Marios Sergides 

JSPS Fellow (2013-2014) , Postdoctoral Scholar (2014-2015)

Work at OIST

Dr Ivan Gusachenko 

Postdoctoral Scholar (2012-2015)

Work at OIST

  • Higher order microfibre modes for dielectric particle trapping and propulsion
    A Maimaiti, VG Truong, M Sergides, I Gusachenko and S Nic Chormaic
    Scientific Reports 5, 9077 (2015)

  • Selective particle trapping and optical binding in the evanescent field of an optical nanofiber
    MC Frawley, I Gusachenko, VG Truong, M Sergides and S Nic Chormaic
    Opt. Exp. 22, 16322 (2014)

Dr Vandna Gokhroo;

Postdoctoral Scholar (2012-2015)

Work at OIST

  • Temperature measurement of cold atoms using transient absorption of a resonant probe through an optical nanofibre
    R Kumar, V Gokhroo, VB Tiwari and S Nic Chormaic
    J. Opt. 18, 115401 (2016)  

  • Optical nanofibres and neutral atoms (invited topical review)  Selected as "Paper of the Week".
    Acknowledged by IOP as a top-cited review article of 2016
    T Nieddu, V Gokhroo and S Nic Chormaic
    J. Opt. 18, 053001 (2016)

  • Multi-level, cascaded electromagnetically induced transparency in cold atoms using an optical nanofibre interface
    R Kumar, V Gokhroo and S Nic Chormaic
    New J. Phys. 17, 123012 (2015)

  • Autler-Townes splitting via frequency up-conversion at ultralow-power levels in cold 87Rb atoms using an optical nanofiber
    R Kumar, V Gokhroo, K Deasy and S Nic Chormaic
    Phys. Rev. A 91, 053842 (2015)

  • Interaction of laser-cooled 87Rb atoms with higher order modes of an optical nanofibre
    R Kumar, V Gokhroo, K Deasy, A Maimaiti, MC Frawley, C Phelan and S Nic Chormaic
    New J. Phys. 17, 013026 (2015)

Mr Vu Hong Le 

Technician (2012-2015)


Technican

Mr Bishwajeet Singh Bhardwaj 

Research Assistant (2014-2015)


Research Assistant

Dr Kieran Deasy 

Postdoctoral Scholar (2012-2015)

Work at OIST

  • Autler-Townes splitting via frequency up-conversion at ultralow-power levels in cold 87Rb atoms using an optical nanofiber
    R Kumar, V Gokhroo, K Deasy and S Nic Chormaic
    Phys. Rev. A 91, 053842 (2015)

  • Interaction of laser-cooled 87Rb atoms with higher order modes of an optical nanofibre
    R Kumar, V Gokhroo, K Deasy, A Maimaiti, MC Frawley, C Phelan and S Nic Chormaic
    New J. Phys. 17, 013026 (2015)

  • Nanostructured optical nanofibre for atom trapping
    M Daly, VG Truong, CF Phelan, K Deasy and S Nic Chormaic
    New J. Phys. 16, 053052 (2014)

Dr Ciarán Phelan 

Postdoctoral Scholar (2012-2014)

Work at OIST

  • Interaction of laser-cooled 87Rb atoms with higher order modes of an optical nanofibre
    R Kumar, V Gokhroo, K Deasy, A Maimaiti, MC Frawley, C Phelan and S Nic Chormaic
    New J. Phys. 17, 013026 (2015)

  • Nanostructured optical nanofibre for atom trapping
    M Daly, VG Truong, CF Phelan, K Deasy and S Nic Chormaic
    New J. Phys. 16, 053052 (2014)

Mr Nitesh Dhasmana 

Research Assistant (2013-2014)

Work at OIST

Mr Alan Curtis 

Technician (2012-2013)

Technician