Publications

SPIE Astronomical Telescopes + Instrumentation 2026

1. First on-sky fringes in K-band of an ULI-manufactured integrated optics beam combiner at the CHARA observatory, Barjot, K., Dinkelaker, A. N., Scott, N., Benoït, A., Anugu, N., Mayer, A. V., Siliprandi, J., Thomson, R. R., Madhav, K., Schaefer, G., Labadie, L., 2026, Proceedings of SPIE 14148, Optical and Infrared Interferometry and Imaging X, paper 17; published 21 August 2026 doi:10.1117/12.3104464
2. A systematic characterization of correlated noise in C-RED one cameras for high-speed interferometry, Paper No.14148-116
3. Commissioning the AIP's ultrafast laser Inscription facility: defining the parameter space for type-I waveguide fabrication, Islam, R., Dinkelaker, A. N., Nayak, A. S., Madhav, K., Roth, M., 2026, Proceedings of SPIE 14148, Optical and Infrared Interferometry and Imaging X, paper 128; published 21 August 2026 doi:10.1117/12.3104824
4. Photonic EMARCOT at Calar Alto: a modular and photonically-connected telescope architecture for the post-ELT era, Pedro J. Amado, Jesus Aceituno, Marina Centenera-Merino, S. Cikota, J. Flores, J. Göhring, S. Leon-Saval, K. Madhav, A. S. Nayak, J. L. Ortiz, D. Pérez-Medialdea, F. J. Pozuelos-Romero, M. M. Roth, M. Ruiz-López, D. Suárez-Garcia, M. A. Sánchez-Carrasdo, , 2026, Proc. SPIE 14147, Ground-based and Airborne Telescopes XI, 141472B , published 21 August 2026 https://doi.org/10.1117/12.3103008
5. Development concept for a Compact Arrayed Waveguide Stacked Multi-Object Spectrograph (CAWSMOS), Mangelsdorff, F., Stoll, A., Zimmermann, L., Lischke, S., Pattery, R. M., Madhav, K., Roth, M. M., 2026, Proceedings of SPIE 14149, Ground-based and Airborne Instrumentation for Astronomy XI, paper 426; published 21 August 2026 doi:10.1117/12.3102855
6. All-fiber broadband wavelength-division multiplexing using a heterogeneous photonic lantern, Nayak, A. S., Goehring, J., Roth, M. M., Madhav, K., 2026, Proceedings of SPIE 14154, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VII, paper 87; published 21 August 2026 doi:10.1117/12.3102473
7. NAIR-APREXIS: enabling photonics-based instruments for long-baseline interferometry and integral-field spectroscopy, L. Labadie, R. J. Harris, K. Madhav, A. Dinkelaker, K. Barjot, A. Benoît, N. J. Scott, N. Anugu, S. Mahdizadeh, V. Kutnohorsky, A. Calcines Rosario, E. Ronson, A. Magniez, R. R. Thomson, T. K. Sharma, A. V. Mayer, G. Schaefer, Proc. SPIE 14154, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VII, 141542G (21 Aug 2026); https://doi.org/10.1117/12.3102962
8. Reproducible inscription of fiber Bragg gratings with ultrashort laser pulses for efficient multiple notch OH emission line filtering, Krämer, R. G., Döpfner, S. L., Rahman, A., Schwartz, G. R., Siems, M. P., Richter, D., Madhav, K., Nolte, S., 2026, Proceedings of SPIE 14154, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VII, paper 143; published 21 August 2026 doi:10.1117/12.3101789
9. Athermal package for OH-emission filters for ground-based astronomy: part III: stability assessment, Rahman, A., Weiß, A. M., Rodriguez Alvarez, C. E., Krämer, R. G., Madhav, K., Luo, X., Nolte, S., 2026, Proceedings of SPIE 14154, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VII, paper 188; published 21 August 2026 doi:10.1117/12.3103479
10. Photonic EMARCOT at Calar Alto: astrophotonic lab at the IAA-CSIC, M. Centenera-Merino, P. J. Amado, J. Aceituno, K. Madhav, C. Betters, S. Cikota, J. Flores, J. Göhring, S. Leon-Saval, A. S. Nayak, J. L. Ortiz, D. Peréz-Medialdea, F. J. Pozuelos, A. Ross-Adams, M. M. Roth, M. Ruíz-Lopez, M. A. Sánchez-Carrasco, Proc. SPIE 14154, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VII, 141548B (21 Aug 2026);https://doi.org/10.1117/12.3104597
11. BluePOCO: a tunable visible frequency comb from microring resonators for astronomical spectrographs, Bodenmüller, D., Madhav, K., Roth, M. M., Huke, P., 2026, Proceedings of SPIE 14154, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VII, paper 356; published 21 August 2026 doi:10.1117/12.3104690
12. Towards high-throughput visible photonic lanterns for the EMARCOT project, Abani Shankar Nayak, Julius Goehring, Marina Centenera-Merino, Pedro José Amado-González, David Pérez-Medialdea, Mabel Ruiz-Lopez, Francisco J. Pozuelos, Miguel Andrés Sánchez Carrasco, José Luis Ortiz Moreno, Jesús Aceituno-Castro, Stefan Cikota, Javier Flores, Christopher Betters, Andrew Ross-Adams, Sergio Leon-Saval, Martin M. Roth, Kalaga Madhav, Proc. SPIE 14154, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VII, 141548K (21 Aug 2026); https://doi.org/10.1117/12.3104791
13. Photonic E-MARCOT at Calar Alto: architecture and integration of the MARCOT pathfinder spectroscopic mode for on-sky validation of MM–MM photonic lanterns at CAHA, Miguel Andrés Sánchez Carrasco, Stefan Cikota, Marina Centenera-Merino, Javier Flores, Pedro José Amado-González, Jesús Aceituno-Castro, David Pérez-Medialdea, María Isabel Ruiz-López, Francisco J. Pozuelos, Kalaga Madhav, Julius Göhring, Abani Shankar Nayak, Sergio León-Saval, José Luis Ortiz, Martin M. Roth, Proc. SPIE 14149, Ground-based and Airborne Instrumentation for Astronomy XI, 141498H (21 Aug 2026); https://doi.org/10.1117/12.3102713

(2026)

1. First demonstration of a multimode-to-multimode photonic lantern for astronomy, Centenera-Merino, M., Ross-Adams, A., Betters, C., Amado, P. J., Aceituno-Castro, J., Madhav, K., Cikota, S., Flores, F. J., Göhring, J., Nayak, A. S., Ortiz, J. L., Pérez-Medialdea, D., Pozuelos, F. J., Roth, M. M., Ruíz-López, M., Sánchez-Carrasco, M. A., Leon-Saval, S., 2026, Optics Letters, Early Posting, Doc. ID 609358; posted 10 August 2026 doi:10.1364/OL.609358
2. Ultralow-crosstalk and high-resolution integrated Echelle grating as interrogator for FBG sensing, Y. Wang, B. Pan, K. Madhav, B. Roth and M. M. Roth, IEEE Photonics Technology Letters, 38, 15, 1106–1109, August 2026 doi: 10.1109/LPT.2026.3661841
3. Towards a Comprehensive Understanding of Planetary Systems through Population-Level, Large-Scale Surveys, Francisco J. Pozuelos, Pedro J. Amado, Jesús Aceituno, Marina Centenera-Merino, Stefan Cikota, Javier Flores, Julius Göhring, Sergio León-Saval, Kalaga Madhav, Giuseppe Morello, Abani Nayak, Jose L. Ortiz, David Pérez-Medialdea, María Isabel Ruiz-López, Miguel A. Sánchez-Carrasco, Alejandro Sánchez-López, ESO White Papers on Future Science Questions, 26 January 2026 doi:10.48550/arXiv.2601.18841
4. Constraints on Binarity for the Extreme Oe Variable Star AzV 493, Oey, M. S., Vargas-Salazar, I., Hodges-Kluck, E., Castro, N., Szymański, M. K., Mateo, M., Renzo, M., Suffak, M. W., Moe, M., 2026, Publications of the Astronomical Society of the Pacific, 138, 7, 074202; July 2026 doi:10.1088/1538-3873/ae81e6
5. Observing orbital decay in the ultracompact hot subdwarf binary system ZTFJ213056.71+442046.5, Teckenburg, P., Kupfer, T., Brown, A. J., Roth, M. M., Ben Daya, F., Knoche, J., Lali, A. K., Vješnica, S., Roje, P., Kretlow, M., Cikota, S., 2026, Astronomy & Astrophysics, 710, A332; June 2026 doi:10.1051/0004-6361/202659317
6. Nitrogen enrichment through stellar chemical feedback at parsec scale in NGC 5253 as seen with MUSE–NFM, Pruijt, B. G. A., Monreal-Ibero, A., Weilbacher, P. M., Walsh, J. R., Kamann, S., Soemitro, A. A., Kusakabe, H., Boogaard, L., 2026, Monthly Notices of the Royal Astronomical Society, 549, 1, stag794;June 2026 doi:10.1093/mnras/stag794