Optical Delay Line Stages – How To Choose The Right One?

The quest to measure the speed of light has an important place in scientific history. It challenged the notion of light's instantaneous nature and led to a revolution in the field. Today, precise control over optical delays is crucial for various spectroscopic techniques. Optical delay lines play a pivotal role in unraveling transient absorption phenomena and probing molecular dynamics. Nanopositioning capabilities are especially important in time-resolved spectroscopy, where femtoseconds and even attoseconds matter. Understanding the basics of optical delay lines, from path length differences to temporal resolutions, is crucial in choosing the right linear translation stage with minimum incremental motion (MIM).

The V-508 Series of Direct Drive Linear Translation Stages is a great solution for optical delay line applications. They offer sub-nanometer resolution and single nanometer MIM, which is essential in time-resolved spectroscopy. These stages are enhanced by PIOne interferometric linear encoders and propelled by center-driven ironless linear motors, which provide unparalleled performance.

This article delves into the intricacies of optical delay lines, the significance of MIM, and the technological advancements driving their evolution, serving as a guide for researchers in selecting the optimal solution for their spectroscopic endeavors.