A fiber-ribbon-based coupling method is presented as a practical way to enhance light sensitivity in spectroscopic and similar systems employing a multialkali photomultiplier tube as a detector. The sensitivity enhancement is achieved by an increase in absorption in the photocathode through multiple total internal reflection in the photomultiplier entrance window. Improvements by factors of approximately 2 (blue-green) to more than 10 (near infrared) have been measured. Implications for spectroscopic applications are discussed.
No takes yet. Share an insight, caveat, or question.
Hallensleben et al. (2000) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: