Fluorescence based systems have revolutionized the way organisms, cells, and biomolecules are visualized and detected. However, challenges that are common in these instruments, such as bleedthrough, background autofluorescence, and poor signal-to-noise ratios (S/N), can reduce performance and lead to frustration.
In this whitepaper, ProPhotonix discusses the issues you will face when specifying a laser diode; the necessary trade-offs between performance, cost and lifetime; and the process of choosing a vendor who can meet your needs
The ultimate instrumentation for trace gas analysis and detection in air quality monitoring as well as industrial process control would be one that can simultaneously provide a sensitive, selective, and fast, multi-gas measurement with wide dynamic range all in a compact and robust system. One of the few such promising technologies that can deliver these requirements is laser based photoacoustic spectroscopy (PAS).
From optical system design to production – this whitepaper is demonstrating the benefits of standard commercial optics over those that are custom made. Off-the-shelf optics are proving increasingly valuable, as they reduce costs, lead times and system complexity.
Optical frequency combs based on femtosecond lasers have become invaluable tools in optical metrology and spectroscopy due to their unique ability to phase-coherently, linking the microwave and optical frequency domains. Combs based on lasers with 1 GHz repetition rate provide a unique combination of large mode spacing and high power coherent super-continuum generation.