With the latest technology advancements in sensing circuits, an LED and/or VCSEL can be utilized for a variety of applications. Depending on the application, there are fundamental differences between LEDs and VCSELs. In this blog post, you’ll learn about how LEDs and VCSELs work, the role of each in sensing circuits, and their similarities and differences. The recent rise in technologies using human vision and sensor components has led to an increased interest in LEDs and VCSEL for medical diagnosis, design for faster and more accurate systems, environmental sensing applications such as gas leakage detection, and more. To explore the application of LEDs in an environment, optical emission spectroscopy can offer some flexible ways to detect various gasses – especially if you’re trying to use a small device.