Oldenbeuving, RuudRuudOldenbeuvingSchilder, NoorNoorSchilderKashi, Amir AbbasAmir AbbasKashiGirouard, PeterPeterGirouardChauvet, NicolasNicolasChauvetGerets, PeterPeterGeretsDahlem, MarcusMarcusDahlem2025-05-262025-05-262025978-1-5106-8438-60277-786XWOS:001483313400026https://imec-publications.be/handle/20.500.12860/45723In recent years, significant improvements in the output power of DFB laser chips have been achieved, which benefits automotive solid-state FMCW LiDAR systems. However, these high-power devices generally produce significant noise, increasing their linewidth. External cavity diode lasers (ECDL) offer a pathway to high power and low linewidths, especially when high-Q resonators are used inside the cavity. LiDAR system performance requires design of a laser with a mode-hop free (MHF) chirp excursion of >3GHz, a chirp rate of 10-100kHz and an optical output power of >500mW with a deviation of <1dB. Generally, in PIC technology, heaters are used to tune the resonant frequencies with speeds upto <10kHz. So, to achieve higher chirp rates, the gain section is directly modulated via current injection. Due to the narrow resonance of the high-Q resonator in a PIC based ECDL, the MHF chirp is very limited, <1GHz, the output power will fluctuate in the order of 3-6dB over the entire MHF chirp range. Here, we present a specific design tailored to achieve MHF tuning ranges of ~10GHz, with stable output power and chirp rates of ~100kHz, laser linewidth <10 kHz and output powers >500mW.Proceedings paper10.1117/12.3041911978-1-5106-8439-3WOS:001483313400026