Research
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Laser Systems & Optical Resonators
Advanced laser systems with nested optical resonator
We embed optical resonators within active fiber cavities to unlock and study novel features and nonlinear dynamics:
- Efficient optical frequency combs generated via a novel class of dissipative solitons: laser cavity solitons (LCS) in nested microresonator cavity
- Laser mode-locking using microresonator-based nonlinear optical loop mirrrors (NOLM/NALM): Low-energy & ultra-narrow spectral width passive mode-locking (world record low-bandwitdh)
- Study of resonator thermo-optical instabilities (e.g. complex coupling of laser gain and resonator thermo-optical frequency shift for saturable absorbtion and Q-switching)
Schematic of a microresonator-based laser mode-locked with a nonlinear optical loop mirrror (left) ; Example of microrod resonator coupled with a fiber taper to explore thermo-optical instability dynamics in gain coupled cavity systems (right).
Optical microresonator (blue) nested in a fibre laser cavity (yellow), used for the generation of frequency microcombs (inset) via the formation of energy-efficient laser cavity solitons
See a video from our colleagues at the University of Sussex talking a bit more about these results.
Principle used for the generation of a "quantum frequency comb":
Additional processing and functionalities can be obtained via coherent optical control (spectral filtering/shaping, phase/amplitude modulation, etc.)
Optical quantum state generation and processing
We use integrated optical resonator systems for the generation and coherent control of quantum optical state:
- Multiple single photons
- Entangled photon pairs
- Multi-mode/photon entangled states
Selected publications:
- M. Rowley, B. Wetzel, L. Di Lauro, J.S. Totero Gongora, H. Bao, J. Silver, L. Del Bino, P. Del’Haye, M. Peccianti, A. Pasquazi, Thermo-optical pulsing in a microresonator filtered fiber-laser: a route towards all-optical control and synchronization, Optics Express, Vol. 27, Issue 14, pp. 19242-19254 (2019)
- H. Bao, A. Cooper, M. Rowley, L. Di Lauro, J.S. Totero Gongora, S.T. Chu, B.E. Little, G.L. Oppo, R. Morandotti, D.J. Moss, B. Wetzel, M. Peccianti, A. Pasquazi, Laser cavity-soliton microcombs, Nature Photonics, Vol. 13, Issue 6, pp. 384-389 (2019)
- M. Kues, C. Reimer, P. Roztocki, L. Romero Cortés, S. Sciara, B. Wetzel, Y. Zhang, A. Cino, S.T. Chu, B.E. Little, D.J. Moss, L. Caspani, J. Azaña, R. Morandotti, On-chip generation of high-dimensional entangled quantum states and their coherent control, Nature, Vol. 546, pp. 622 (2017)
- M. Kues, C. Reimer, B. Wetzel, P. Roztocki, B.E. Little, S.T. Chu, D.J. Moss, R. Morandotti, Passively mode-locked laser with ultra-narrow spectral width, Nature Photonics, Vol. 11, pp. 159 (2017)
- C. Reimer, M. Kues, P. Roztocki, B. Wetzel, F. Grazioso, B.E. Little, S.T. Chu, T. Johnston, Y. Bromberg, L. Caspani, D.J. Moss, R. Morandotti, Generation of multiphoton entangled quantum states by means of integrated frequency combs, Science, Vol. 351, pp. 1176 (2016)
- C. Reimer, M. Kues, L. Caspani, B. Wetzel, P. Roztocki, M. Clerici, Y. Jestin, M. Ferrera, M. Peccianti, A. Pasquazi, B.E. Little, S.T. Chu, D.J. Moss, R. Morandotti, Cross-polarized photon-pair generation and bi-chromatically pumped optical parametric oscillation on a chip, Nature Communications, Vol. 6, pp. 8236 (2015)
- P. Heinricht, B. Wetzel, S. O’Brien, A. Amann, S. Osborne, Bistability in an injection locked two color laser with dual injection, Applied Physics Letters, Vol. 99, Issue 1, pp. 011104 (2011)
Selected highlights & monographs:
- M. Kues, C. Reimer, P. Roztocki, L. Romero Cortés, S. Sciara, B. Wetzel, Y. Zhang, A. Cino, S.T. Chu, B.E. Little, D.J. Moss, L. Caspani, J. Azaña, R. Morandotti, Scaling on-chip entangled photon states to higher dimensions, Optics & Photonics News Special Issue: Optics in 2017, Vol. 28, Issue 12, pp. 37 (2017)
- C. Reimer, M. Kues, P. Roztocki, B. Wetzel, F. Grazioso, B.E. Little, S.T. Chu, T. Johnston, Y. Bromberg, L. Caspani, D.J. Moss, R. Morandotti, On-chip quantum frequency combs, Optics & Photonics News Special Issue: Optics in 2016, Vol. 27, Issue 12, pp. 46 (2016)