Overview
Background
Dr. Karl Bertling has made significant contributions to pioneering imaging and sensing via laser feedback interferometry, spanning diverse laser technologies including sensors based on visible lasers, infrared surface-emitting lasers, mid-infrared inter-band cascade lasers, and terahertz quantum cascade lasers. His current research focus includes leveraging terahertz quantum cascade laser feedback interferometry for early melanoma detection and agri-photonics, as well as near-field terahertz and mid-infrared imaging of nanomaterials and nanostructures.
Availability
- Dr Karl Bertling is:
- Available for supervision
Fields of research
Qualifications
- Bachelor of Science in Physics, The University of Queensland
- Bachelor (Honours) of Engineering - Electrical, The University of Queensland
- Masters (Research) of Engineering - Electrical, The University of Queensland
- Doctor of Philosophy, The University of Queensland
Works
Search Professor Karl Bertling’s works on UQ eSpace
2015
Journal Article
Three-dimensional terahertz imaging using swept-frequency feedback interferometry with a quantum cascade laser
Keeley, J., Dean, P., Valavanis, A., Bertling, K., Lim, Y. L., Alhathlool, R., Taimre, T., Li, L. H., Indjin, D., Aleksandar, A. D., Linfield, E. H. and Davies, A. G. (2015). Three-dimensional terahertz imaging using swept-frequency feedback interferometry with a quantum cascade laser. Optics Letters, 40 (6), 994-997. doi: 10.1364/OL.40.000994
2015
Journal Article
Active phase-nulling of the self-mixing phase in a terahertz frequency quantum cascade laser
Dean, P., Keeley, J., Valavanis, A., Bertling, K., Lim, Y. L., Taimre, T., Alhathlool, R., Li, L. H., Indjin, D., Rakić, A. D., Linfield, E. H. and Davies, A. G. (2015). Active phase-nulling of the self-mixing phase in a terahertz frequency quantum cascade laser. Optics Letters, 40 (6), 950-953. doi: 10.1364/OL.40.000950
2015
Conference Publication
Effect of the optical system on the Doppler spectrum in laser-feedback interferometry
Mowla, Alireza, Nikolić, Milan, Taimre, Thomas, Tucker, John, Lim, Yah Leng, Bertling, Karl and Rakić, Aleksandar (2015). Effect of the optical system on the Doppler spectrum in laser-feedback interferometry. Washington, DC, United States: Optical Society of America. doi: 10.1364/AO.54.000018
2014
Journal Article
High-contrast coherent terahertz imaging of porcine tissue via swept-frequency feedback interferometry
Lim, Yah Leng, Taimre, Thomas, Bertling, Karl, Dean, Paul, Indjin, Dragan, Valavanis, Alexander, Khanna, Suraj P., Lachab, Mohammad, Schaider, Helmut, Prow, Tarl W., Soyer, H. Peter, Wilson, Stephen J., Linfield, Edmund H., Davies, A. Giles and Rakic, Aleksandar D. (2014). High-contrast coherent terahertz imaging of porcine tissue via swept-frequency feedback interferometry. Biomedical Optics Express, 5 (11), 3981-3989. doi: 10.1364/BOE.5.003981
2014
Journal Article
Biomedical applications of terahertz self-mixing interferometry
Rakic, Aleksandar, Karl Bertling, Yah Leng Lim, Wilson, Stephen J., Milan Nikolic, Thomas Taimre, Dragan Indjin, Alexander Valavanis, Edmund H. Linfield, A. Giles Davies, Graeme Walker, Blake Ferguson, Tarl Prow, Helmut Schaider and Soyer, H. Peter (2014). Biomedical applications of terahertz self-mixing interferometry. SPIE Newsroom doi: 10.1117/2.1201409.005613
2014
Journal Article
Laser dynamics under frequency-shifted optical feedback with random phase
Nikolic, M., Taimre, T., Tucker, J., Lim, Yah Leng, Bertling, K. and Rakic, A. D. (2014). Laser dynamics under frequency-shifted optical feedback with random phase. Electronics Letters, 50 (19), 1380-1382. doi: 10.1049/el.2014.2573
2014
Journal Article
Terahertz imaging using quantum cascade lasers: a review of systems and applications
Dean, P., Valavanis, A., Keeley, J., Bertling, K., Lim, Y. L., Alhathlool, R., Burnett, A. D., Khanna, S. P., Indjin, D., Taimre, T., Rakić, A. D., Linfield, E. H, and Davies, A. G. (2014). Terahertz imaging using quantum cascade lasers: a review of systems and applications. Journal of Physics D: Applied Physics, 47 (37) 374008, 374008.1-374008.22. doi: 10.1088/0022-3727/47/37/374008
2014
Other Outputs
A laser system for imaging and materials analysis
Rakic, Aleksandar, Dean, Paul , Giles Davies, Alexander , Indjin, Dragan , Linfield, Edmund Harold , Wilson, Stephen J., Taimre, Thomas , Bertling, Karl and Lim, Yah Leng (2014). A laser system for imaging and materials analysis. WO2015024058 A1.
2014
Journal Article
Methodology for materials analysis using swept-frequency feedback interferometry with terahertz frequency quantum cascade lasers
Taimre, Thomas, Bertling, Karl, Lim, Yah Leng, Dean, Paul, Indjin, Dragan and Rakic, Aleksandar D. (2014). Methodology for materials analysis using swept-frequency feedback interferometry with terahertz frequency quantum cascade lasers. Optics Express, 22 (15), 18633-18647. doi: 10.1364/OE.22.018633
2014
Journal Article
Solving self-mixing equations for arbitrary feedback levels: a concise algorithm
Kliese, Russel, Taimre, Thomas, Bakar, A. Ashrif A., Lim, Yah Leng, Bertling, Karl, Nikolić, Milan, Perchoux, Julien, Bosch, Thierry and Rakić, Aleksandar D. (2014). Solving self-mixing equations for arbitrary feedback levels: a concise algorithm. Applied Optics, 53 (17), 3723-3736. doi: 10.1364/AO.53.003723
2014
Journal Article
Terahertz inverse synthetic aperture radar imaging using self-mixing interferometry with a quantum cascade laser
Lui, H. S., Taimre, T., Bertling, K., Lim, Y. L., Dean, P., Khanna, S. P., Lachab, M., Valavanis, A., Indjin, D., Linfield, E. H., Davies, A. G. and Rakic, A. D. (2014). Terahertz inverse synthetic aperture radar imaging using self-mixing interferometry with a quantum cascade laser. Optics Letters, 39 (9), 2629-2632. doi: 10.1364/OL.39.002629
2014
Journal Article
Self-mixing sensing system based on uncooled vertical-cavity surface-emitting laser array: linking multichannel operation and enhanced performance
Tucker, John R., Mowla, Alireza, Herbert, Jeremy, Fuentes, Miguel A., Freakley, Craig S., Bertling, Karl, Lim, Yah Leng, Matharu, Ranveer S., Perchoux, Julien, Taimre, Thomas, Wilson, Stephen J. and Rakic, Aleksandar D. (2014). Self-mixing sensing system based on uncooled vertical-cavity surface-emitting laser array: linking multichannel operation and enhanced performance. Optics Letters, 39 (2), 394-397. doi: 10.1364/OL.39.000394
2014
Conference Publication
THz QCL self-mixing interferometry for biomedical applications
Rakić, Aleksandar, Taimre, Thomas, Bertling, Karl, Lim, Yah Leng, Wilson, Stephen J., Nikolić, Milan, Valavanis, Alexander, Indjin, Dragan, Linfield, Edmund H., Davies, A. Giles, Ferguson, Blake, Walker, Graeme, Schaider, Helmut and Soyer, H. Peter (2014). THz QCL self-mixing interferometry for biomedical applications. SPIE Optical Engineering + Applications Conference 2014, San Diego, United States, 17-21 August 2014. Bellingham, WA, United States: S P I E - International Society for Optical Engineering. doi: 10.1117/12.2061433
2014
Conference Publication
Electrical modulation schemes for imaging by self-mixing in terahertz quantum cascade lasers
Keeley, J. T., Dean, P., Valavanis, A., Bertling, K., Taimre, T., Lim, Y. L., Alhathlool, R., Chowdhury, S., Li, L. H., Indjin, D., Rakić, A., Linfield, E. H. and Davies, A. G. (2014). Electrical modulation schemes for imaging by self-mixing in terahertz quantum cascade lasers. IQCLSW 2014: 1st International Quantum Cascade Lasers School and Workshop, Policoro (Matera), Italy, 7-12 September, 2014.
2014
Conference Publication
Effect of the optical numerical aperture on the Doppler spectrum in laser Doppler velocimetry
Mowla, Alireza, Nikolic, Milan, Lim, Yah Leng, Bertling, Karl, Rakic, Aleksandar D. and Taimre, Thomas (2014). Effect of the optical numerical aperture on the Doppler spectrum in laser Doppler velocimetry. Conference on Optoelectronic and Microelectronic Materials and Devices, Perth, WA, Australia, 14-17 December 2014. Perth, WA, Australia: Institute of Electrical and Electronic Engineers. doi: 10.1109/COMMAD.2014.7038654
2014
Conference Publication
Coherent THz imaging using the self-mixing effect in quantum cascade lasers
Dean, P., Taimre, T., Lui, H. S., Bertling, K., Lim, Y. L., Valavanis, A., Keeley, J., Alhathlool, R., Chowdhury, S., Li, L. H., Khanna, S. P., Lachab, M., Indjin, D., Rakic, A. D., Linfield, E. H. and Davies, A. G. (2014). Coherent THz imaging using the self-mixing effect in quantum cascade lasers. Optical Sensors, Barcelona Spain, 27-31 July 2014. Washington, D.C.: Optical Society of American (OSA). doi: 10.1364/SENSORS.2014.SeTh4B.3
2014
Conference Publication
High-power (> 1 Watt) terahertz frequency quantum cascade lasers for stand-off imaging
Valavanis, A., Dean, P., Li, L., Burnett, A. D., Keeley, J., Chowdhury, S., Alhathlool, R., Chen, L., Zhu, J., Han, J., Freeman, J., Khanna, S. P., Indjin, D., Davies, A. G., Linfield, E. H., Taimre, T., Lim, Y. L., Bertling, K. and Rakic, A. (2014). High-power (> 1 Watt) terahertz frequency quantum cascade lasers for stand-off imaging. Sensors and Electronics Panel (SET) Specialists’ Meeting, Salisbury, United Kingdom, 24-25 July 2014. NATO Science and Technology Organization.
2013
Journal Article
Demonstration of the self-mixing effect in interband cascade lasers
Bertling, K., Lim, Y. L., Taimre, T., Indjin, D., Dean, P., Weih, R., Höfling, S., Kamp, M., von Edlinger, M., Koeth, J. and Rakić, A. (2013). Demonstration of the self-mixing effect in interband cascade lasers. Applied Physics Letters, 103 (23) 231107, 231107.1-231107.3. doi: 10.1063/1.4839535
2013
Journal Article
Self-mixing laser Doppler flow sensor: an optofluidic implementation
Nikolić, Milan, Hicks, Elaine, Lim, Yah Leng, Bertling, Karl and Rakić, Aleksandar (2013). Self-mixing laser Doppler flow sensor: an optofluidic implementation. Applied Optics, 52 (33), 8128-8133. doi: 10.1364/AO.52.008128
2013
Journal Article
Coherent three-dimensional terahertz imaging through self-mixing in a quantum cascade laser
Dean, Paul, Valavanis, Alex, Keeley, James, Bertling, Karl, Lim, Yah Leng, Alhathlool, Raed, Chowdhury, Siddhant, Taimre, Thomas, Li, Lianhe H., Indjin, Dragan, Wilson, Stephen J., Rakić, Aleksandar, Linfield, Edmund H. and Davies, A. Giles (2013). Coherent three-dimensional terahertz imaging through self-mixing in a quantum cascade laser. Applied Physics Letters, 103 (18) 181112, 181112.1-181112.4. doi: 10.1063/1.4827886
Funding
Current funding
Past funding
Supervision
Availability
- Dr Karl Bertling is:
- Available for supervision
Looking for a supervisor? Read our advice on how to choose a supervisor.
Supervision history
Current supervision
-
Doctor Philosophy
Application of non-contact THz spectroscopic imaging towards preservation of heritage structures in India
Associate Advisor
Other advisors: Professor Aleksandar Rakic
-
Doctor Philosophy
Understanding contrast mechanisms of absorption spectroscopy of skin DNA solutions using biomolecule dynamics
Associate Advisor
Other advisors: Dr Tina Qi
-
Doctor Philosophy
Engineering Beam Profiles in Terahertz Quantum Cascade Lasers: An Electromagnetic Approach
Associate Advisor
Other advisors: Dr Tina Qi, Professor Aleksandar Rakic
Completed supervision
-
2025
Doctor Philosophy
Terahertz imaging using optical feedback in quantum cascade lasers
Associate Advisor
Other advisors: Dr Tina Qi, Professor Aleksandar Rakic
-
2022
Doctor Philosophy
Light-matter interactions at the nanoscale: a case for terahertz near-field spectroscopy in semiconductor nanodevices
Associate Advisor
Other advisors: Professor Aleksandar Rakic
Media
Enquiries
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