posted on 2023-06-09, 14:20authored byHualong Bao, Andrew Cooper, Sai T Chu, Dave J Moss, Roberto Morandotti, Brent E Little, Marco Peccianti, Alessia Pasquazi
We experimentally demonstrate the generation of highly coherent Type-II micro-combs based on a microresonator nested in a fiber cavity loop, known as the filter-driven four wave mixing (FD-FWM) laser scheme. In this system, the frequency spacing of the comb can be adjusted to integer multiples of the free-spectral range (FSR) of the nested micro-resonator by properly tuning the fiber cavity length. Sub-comb lines with single FSR spacing around the primary comb lines can be generated. Such a spectral emission is known as a “Type-II comb.” Our system achieves a fully coherent output. This behavior is verified by numerical simulations. This study represents an important step forward in controlling and manipulating the dynamics of an FD-FWM laser.
Funding
CHRONOS - Route to On-Chip Resonating Optical Clocks via Nonlinear Optics; G1159; EUROPEAN UNION; IIF-GA-2012-327627
UK Quantum Technology Hub for Sensors and Metrology; G1511; EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL; EP/M013294/1
Route to guided TeraHertz backscattering Inspection and Analysis : THEIA; G1308; EUROPEAN UNION; PCIG14-GA-2013-630833
TIMING: Time-Resolved Nonlinear Ghost Imaging; G2016; EUROPEAN UNION; 725046