Establishing equivalent circuits of mounted, high-power VCSEL arrays for iToF cameras.
Opt Lett
; 49(11): 3046-3049, 2024 Jun 01.
Article
em En
| MEDLINE
| ID: mdl-38824324
ABSTRACT
Solid-state indirect time-of-flight (iToF) cameras are crucial to numerous short-to-medium-range applications, owing to their advantages in terms of system integrability and long-term reliability. However, due to the low light intensity, the sensing range of iToF cameras is generally limited to a few meters, which hinders their wide applications. Further increasing the sensing range requires not only higher-power laser diodes but also well-designed driver circuits, which are based on prior knowledge of the laser diodes' equivalent circuits (ECs). However, experimental studies on ECs of a mounted, high-power vertical-cavity surface-emitting laser (VCSEL) array that comprehensively incorporates all parasitic components, especially parasitic stemming from printed circuit boards (PCBs), remain absent. In this Letter, an 850â
nm VCSEL array with a 15.3â
W peak power and a 581â
MHz bandwidth is fabricated, and more importantly, its EC is experimentally established. Leveraging the accurate EC, a compact iToF camera with a sensing range up to 11.50â
m is designed. In addition, a modified precision model is proposed to better evaluate the iToF camera's performance.
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01-internacional
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MEDLINE
Idioma:
En
Revista:
Opt Lett
Ano de publicação:
2024
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Article