Dr Chris Betters
People_

Dr Chris Betters

Phone
+61 2 9351 1983
Fax
+61 2 9351 7726
Address
A28 - Physics Building
The University of Sydney
Dr Chris Betters

My research focuses on the development (design, construction, characterisation, and implementation) of cutting-edge compact optical instruments that harness the latest photonic technologies, originally for astronomical applications. More recently, I have been using techniques and methods I developed for astronomy to tackle a broader range of problems in academia and industry, specifically in remote earth observation and agriculture.

Project titleResearch student
Exoplanet detection via TOLIMAN mission.Md Redyan AHMED
Wavefront Sensing with Photonic LanternsTeodor MALENDEVYCH

Publications

Journals

  • Rahme, M., Tuthill, P., Betters, C., Large, M., Leon-Saval, S. (2024). A new gas detection technique through cross-correlation with a complex aperiodic FBG. Scientific Reports, 14(1). [More Information]
  • Betters, C., Leon-Saval, S., Bland-Hawthorn, J. (2024). Photonic comb: a stabilized single-mode fiber etalon for wavelength calibration. Applied Optics, 16(14), 14-20.
  • Mao, Y., Betters, C., Garske, S., Randle, J., Wong, K., Cairns, I., Evans, B. (2023). A Customisable Data Acquisition System for Open-Source Hyperspectral Imaging. Sensors, 23(20). [More Information]

Conferences

  • Lin, J., Vievard, S., Jovanovic, N., Norris, B., Fitzgerald, M., Betters, C., Gatkine, P., Guyon, O., Kim, Y., Leon-Saval, S., et al (2022). Experimental measurements of AO-fed photonic lantern coupling efficiencies. Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V 2022, Montreal: Society of Photo-Optical Instrumentation Engineers (SPIE). [More Information]
  • Alsalem, N., Betters, C., Leon-Saval, S., Cairns, I. (2021). CUAVA InGaAs-based, Short Wavelength InfraRed (SWIR) instrument for atmospheric reconnaissance: preliminary design. 2020 International Conference on Space Optics, ICSO 2020, Bellingham: Society of Photo-Optical Instrumentation Engineers (SPIE). [More Information]
  • Norris, B., Wei, J., Betters, C., Wong, A., Leon-Saval, S. (2020). All-fibre focal-plane wavefront sensor. 2020 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR 2020), Sydney: Optical Society of America. [More Information]

2024

  • Rahme, M., Tuthill, P., Betters, C., Large, M., Leon-Saval, S. (2024). A new gas detection technique through cross-correlation with a complex aperiodic FBG. Scientific Reports, 14(1). [More Information]
  • Betters, C., Leon-Saval, S., Bland-Hawthorn, J. (2024). Photonic comb: a stabilized single-mode fiber etalon for wavelength calibration. Applied Optics, 16(14), 14-20.

2023

  • Mao, Y., Betters, C., Garske, S., Randle, J., Wong, K., Cairns, I., Evans, B. (2023). A Customisable Data Acquisition System for Open-Source Hyperspectral Imaging. Sensors, 23(20). [More Information]
  • Lin, J., Deo, V., Lozi, J., Vievard, S., Levinstein, D., Sallum, S., Jovanovic, N., Fitzgerald, M., Xin, Y., Kim, Y., Norris, B., Betters, C., Leon-Saval, S., et al (2023). Real-time Experimental Demonstrations of a Photonic Lantern Wave-front Sensor. Astrophysical Journal Letters, 959(2), L34. [More Information]
  • Alsalem, N., Betters, C., Mao, Y., Cairns, I., Leon-Saval, S. (2023). RedEye-1: a compact SWIR hyperspectral imager for observation of atmospheric methane and carbon dioxide. OSA Continuum, 2(11), 2333-2347. [More Information]

2022

  • Lin, J., Vievard, S., Jovanovic, N., Norris, B., Fitzgerald, M., Betters, C., Gatkine, P., Guyon, O., Kim, Y., Leon-Saval, S., et al (2022). Experimental measurements of AO-fed photonic lantern coupling efficiencies. Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V 2022, Montreal: Society of Photo-Optical Instrumentation Engineers (SPIE). [More Information]
  • Mao, Y., Betters, C., Evans, B., Artlett, C., Leon-Saval, S., Garske, S., Cairns, I., Cocks, T., Winter, R., Dell, T. (2022). OpenHSI: A Complete Open-Source Hyperspectral Imaging Solution for Everyone. Remote Sensing, 14(9). [More Information]
  • Norris, B., Betters, C., Wei, J., Yerolatsitis, S., Amezcua-Correa, R., Leon-Saval, S. (2022). Optimal broadband starlight injection into a single-mode fibre with integrated photonic wavefront sensing. Optics Express, 30(19), 34908-34917. [More Information]

2021

  • Anagnos, T., Trappen, M., Kuo Tiong, B., Feger, T., Yerolatsitis, S., Harris, R., Lozi, J., Jovanovic, N., Birks, T., Vievard, S., Leon-Saval, S., Norris, B., Betters, C., et al (2021). 3D-M3: high-spatial-resolution spectroscopy with extreme AO and 3D-printed micro-lenslets. Applied Optics, 60(19), D108-D121. [More Information]
  • Alsalem, N., Betters, C., Leon-Saval, S., Cairns, I. (2021). CUAVA InGaAs-based, Short Wavelength InfraRed (SWIR) instrument for atmospheric reconnaissance: preliminary design. 2020 International Conference on Space Optics, ICSO 2020, Bellingham: Society of Photo-Optical Instrumentation Engineers (SPIE). [More Information]
  • Sweeney, D., Norris, B., Tuthill, P., Scalzo, R., Wei, J., Betters, C., Leon-Saval, S. (2021). Learning the lantern: neural network applications to broadband photonic lantern modeling. Journal of Astronomical Telescopes, Instruments, and Systems, 7(2), 028007-1-028007-20. [More Information]

2020

  • Betters, C., Bland-Hawthorn, J., Sukkarieh, S., Gris-Sanchez, I., Leon-Saval, S. (2020). A Multi-Core Fibre Photonic Lantern-Based Spectrograph for Raman Spectroscopy. IEEE Photonics Technology Letters, 32(7), 395-398. [More Information]
  • Norris, B., Wei, J., Betters, C., Wong, A., Leon-Saval, S. (2020). All-fibre focal-plane wavefront sensor. 2020 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR 2020), Sydney: Optical Society of America. [More Information]
  • Norris, B., Wei, J., Betters, C., Wong, A., Leon-Saval, S. (2020). An all-photonic focal-plane wavefront sensor. Nature Communications, 11(1), 1-9. [More Information]

2019

  • Tedder, S., Vyhnalek, B., Leon-Saval, S., Betters, C., Floyd, B., Staffa, J., Lafon, R. (2019). Single-Mode Fiber and Few-Mode Fiber Photonic Lanterns performance evaluated for use in a Scalable Real-time Photon Counting Ground Receiver. Free-Space Laser Communications XXXI 2019, Bellingham: Society of Photo-Optical Instrumentation Engineers (SPIE). [More Information]

2018

  • Kos, J., Bland-Hawthorn, J., Betters, C., Leon-Saval, S., Asplund, M., Buder, S., Casey, A., D’Orazi, V., De Silva, G., Freeman, K., Lewis, G., Sharma, S., Hayden, M., et al (2018). Holistic spectroscopy: Complete reconstruction of a wide-field, multiobject spectroscopic image using a photonic comb. Monthly Notices of the Royal Astronomical Society, 480(4), 5475-5494. [More Information]

2017

  • Jovanovic, N., Cvetojevic, N., Norris, B., Betters, C., Schwab, C., Lozi, J., Guyon, O., Gross, S., Martinache, F., Tuthill, P., et al (2017). Demonstration of an efficient, photonic-based astronomical spectrograph on an 8-m telescope. Optics Express, 25(15), 17753-17766. [More Information]
  • Leon-Saval, S., Betters, C., Salazar Gil, J., Min, S., Gris-Sanchez, I., Birks, T., Lawrence, J., Haynes, R., Haynes, D., Roth, M., Bland-Hawthorn, J., et al (2017). Divide and conquer: An efficient solution to highly multimoded photonic lanterns from multicore fibres. Optics Express, 25(15), 17530-17540. [More Information]
  • Bland-Hawthorn, J., Kos, J., Betters, C., De Silva, G., O'Byrne, J., Patterson, R., Leon-Saval, S. (2017). Mapping the aberrations of a wide-field spectrograph using a photonic comb. Optics Express, 25(14), 15614-15623. [More Information]

2016

  • Jovanovic, N., Cvetojevic, N., Schwab, C., Norris, B., Lozi, J., Gross, S., Betters, C., Singh, G., Guyon, O., Martinache, F., Tuthill, P., et al (2016). Efficiently feeding single-mode fiber photonic spectrographs with an extreme adaptive optics system: On-sky characterization and preliminary spectroscopy. Ground-Based and Airborne Instrumentation for Astronomy VI, Bellingham: Society of Photo-Optical Instrumentation Engineers (SPIE). [More Information]
  • Betters, C., Hermouet, M., Blanc, T., Colless, J., Bland-Hawthorn, J., Kos, J., Leon-Saval, S. (2016). Low cost photonic comb for sub-m/s wavelength calibration. Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, Bellingham: Society of Photo-Optical Instrumentation Engineers (SPIE). [More Information]
  • Betters, C., Murray, A., Bland-Hawthorn, J., Leon-Saval, S. (2016). Precision radial velocities with inexpensive compact spectrographs. Ground-Based and Airborne Instrumentation for Astronomy VI, Bellingham: Society of Photo-Optical Instrumentation Engineers (SPIE). [More Information]

2014

  • Betters, C., Leon-Saval, S., Bland-Hawthorn, J., Richards, S., Birks, T., Gris-Sanchez, I. (2014). PIMMS échelle: The next generation of compact diffraction limited spectrographs for arbitrary input beams. Ground-Based and Airborne Instrumentation for Astronomy V, : SPIE. [More Information]
  • Ellis,, S., Saunders,, W., Betters, C., Croom, S. (2014). The problem of scattering in fibre-fed VPH spectrographs and possible solutions. Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, : SPIE.

2013

  • Betters, C., Leon-Saval, S., Robertson, J., Bland-Hawthorn, J. (2013). Beating the classical limit: A diffraction-limited spectrograph for an arbitrary input beam. Optics Express, 21(22), 26103-26112. [More Information]

2012

  • Betters, C., Leon-Saval, S., Bland-Hawthorn, J., Robertson, J. (2012). Demonstration and design of a compact diffraction limited spectrograph. Ground-Based and Airborne Instrumentation for Astronomy IV, Bellingham: SPIE Proceedings. [More Information]
  • Funamoto, J., Wu, X., Cairns, I., Bland-Hawthorn, J., Betters, C., Fogarty, L., Leon-Saval, S., Monger, A., Xiao, S. (2012). Engineering i-INSPIRE - a Pico-Satellite from Australia. 11th Australian Space Science Conference, Sydney: National Space Society of Australia Ltd.
  • Cvetojevic, N., Jovanovic, N., Betters, C., Lawrence, J., Ellis, S., Robertson, J., Bland-Hawthorn, J. (2012). First starlight spectrum captured using an integrated photonic micro-spectrograph. Astronomy & Astrophysics, 544, 1-4. [More Information]

2011

  • Cvetojevic, N., Jovanovic, N., Betters, C., Lawrence, J., Bland-Hawthorn, J., Withford, M. (2011). Technology for Telescope Integration of the Integrated Photonic Spectrograph Prototype. International Quantum Electronics Conference (IQEC) and Conference on Lasers and Electro-Optics (CLEO) Pacific Rim 2011, Sydney, Australia: Australian Optical Society.

2010

  • Lawrence, J., Betters, C., Bland-Hawthorn, J., Cvetojovic, N., Ellis, S., Haynes, R., Horton, A., Jovanovica, N., Leon-Saval, S., Robertson, J. (2010). Development of an array-waveguide grating astronomical spectrograph. Frontiers in Optics 2010/Laser Science XXVI Conference, Washington, DC: Optical Society of America. [More Information]
  • Bland-Hawthorn, J., Lawrence, J., Robertson, J., Campbell, S., Pope, B., Betters, C., Leon-Saval, S., Birks, T., Haynes, R., Cvetojevic, N., et al (2010). PIMMS: photonic integrated multimode microspectrograph. SPIE Conference on Ground-based and Airborne Instrumentation for Astronomy III, USA: Society of Photo-Optical Instrumentation Engineers (SPIE).

Selected Grants

2017

  • Advanced Photonics Sensors for Food Safety in Autonomous Robotic Platforms, Leon-Saval S, Bland-Hawthorn J, Betters C, DVC Research/Sydney Research Excellence Initiative 2020 (SREI)