Single-mode VCSELs are the best choice for systems that require a high spatial resolution and low power consumption even at fluctuating temperatures. In addition, the design and production of large quantities of these VCSELs lead to inexpensive components.
SM VCSELs feature a stable, Gaussian-shaped far field. In contrast, MM VCSELs have a “donut-shaped“ far field and a higher noise level.
VCSELs used for pointing or in position determination emit at the wavelengths 670 nm and 850 nm.
