He completed his Ph.D. in 2011, with a dissertation in photonics at the Max Planck Institute for Quantum Optics under the supervision of Theodor W. Hänsch and Tobias Kippenberg.
At the National Physical Laboratory he was heading a research team on microphotonics and microresonator-based optical frequency combs.
[3][4] Del'Haye is also working on quantum metrology, optical precision measurements and symmetry breaking of light states.
Using symmetry breaking of counterpropagating light states, he and his team demonstrated an optical diode that can be integrated into photonic chips.
[7][8][9] In 2013, Del'Haye received the QEOD Thesis Prize for Fundamental Aspects of the European Physical Society for the "Discovery and development of microresonator based frequency combs".