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Dr. Kalaga Madhav

Image of Kalaga Madhav

Research interests :

  1. Inverse design of photonics
  2. Nanophotonics
  3. Photonics for ground- and space- based astronomy

I head the Astrophotonics Research Group in innoFSPEC at AIP. My research group consists of 7 postdocs, 5 PhD students, 3 masters students, and student assistants. The team is currently developing :

  1. AFBG OH-emission filters for ground-based telescopes
  2. Arrayed Waveguide Gratings (AWG) based high R spectrographs for ground- and space -based astronomy
  3. Micro-ring resonator based ultra-stable frequency combs for astronomy
  4. Photonic lanterns (PL)
  5. Adaptic Optics (AO)
  6. Beam combiners (DBC) and pupil re-mappers
  7. Technology transfer from astronomy : detecting skin cancer and micro-plastics through Raman spectroscopy using astronomical spectrographs.

Patents (Granted) :

  1. US 9,267,854 B2,
  2. US 9,976,991 B2,
  3. US 10,620,128 B2

Patents (Filed) :

  1. EP 2,220,4912.4
  2. ES 2,822,223 A1
  3. EP 3,945,351 A1

Latest non-ADS listed publications can be seen HERE

Astrophotonics
Group Head
Office: LH/0-02
Phone: +49 331 7499 390
kmadhavnothing@aip.de

Leibniz-Institut
für Astrophysik Potsdam (AIP)
An der Sternwarte 16
14482 Potsdam

Publications

Latest refereed publications, retrieved from NASA ADS:

Starlight coupling through atmospheric turbulence into few-mode fibres and photonic lanterns in the presence of partial adaptive optics correction
Diab, M., Dinkelaker, A. N., Davenport, J., Madhav, K., Roth, M. M., 2021
Monthly Notices of the Royal Astronomical Society, 501, 2, 1557; published February 2021
doi:10.1093/mnras/staa3752, NASA ADS
Participating AIP sections and groups: innoFSPEC / Astrophotonics, innoFSPEC
First demonstration of OH suppression in a high-efficiency near-infrared spectrograph
Ellis, S. C., ... Roth, M. M., ... Hernandez, E., ... Giannone, D., Madhav, K., Rahman, A., ..., 2020
Monthly Notices of the Royal Astronomical Society, 492, 2, 2796; published February 2020
doi:10.1093/mnras/staa028, NASA ADS
Participating AIP sections and groups: innoFSPEC, innoFSPEC / Astrophotonics, Project Management
Cross-dispersed in-fibre spectrometer based on helix core bundle
Stoll, A., Zhang, Z., Sun, K., Madhav, K., Fiebrandt, J., Roth, M. M., 2019
Journal of Modern Optics, 66, 8, 829; published May 2019
doi:10.1080/09500340.2019.1576929, NASA ADS
Participating AIP sections and groups: innoFSPEC / Astrophotonics, innoFSPEC