Photon signal detection and evaluation in the adaptive optics scanning laser ophthalmoscope.
To select a suitable photodetector for an adaptive optics scanning laser ophthalmoscope (AOSLO) and evaluate its performance, we characterized the signal and noise properties in the AOSLO photon detection and derived the signal-to-noise ratio (SNR). Using the SNR as the main criterion, we chose the best detector from a selection of four photomultiplier tubes (PMTs) and three avalanche photodiodes (APDs). We conducted a comprehensive evaluation of the performance of the selected detector on our AOSLO. The study presents a practical strategy that can be used to test the photodetector for either initial evaluation or subsequent performance in in-line inspection.
Zhang
Yuhua
Y
School of Optometry, University of California, Berkeley 94720-2020, USA. yuhuazhang@berkeley.edu
Roorda
Austin
A
D004867:Equipment Design; D019544:Equipment Failure Analysis; D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation* / Q000379:methods; D007909:Lenses; D018613:Microscopy, Confocal / Q000295:instrumentation* / Q000379:methods; D019721:Ophthalmoscopes; D010783:Photometry / Q000295:instrumentation* / Q000379:methods; D017785:Photons; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity