New generation photon-counting cameras: algol and CPNG

Area of Science:

• Advanced optical imaging technologies
• Photon counting detector development

Background:

• Intensified CCD cameras are crucial for high-resolution and fast imaging.
• Commercial photonic components and computing power have advanced significantly.

Purpose of the Study:

• To introduce new generation photon counting cameras, Algol and CPNG.
• To detail the design and processing for optimal performance in sensitive imaging applications.

Main Methods:

• Optical aperture synthesis and speckle interferometry for high angular resolution.
• Photon centroiding algorithms for enhanced sensitivity.
• Real-time elaborated data processing for optimal spatiotemporal resolution.

Main Results:

• CPNG (532x516 pixels) and Algol (1024x1024 pixels) operate at 262 Hz and 100 Hz, respectively.
• Achieved very low dark current (5.5 x 10^-4 e-/pixel/s) and saturation flux (~7 photon events/pixel/s).
• Quantum efficiencies reached up to 36% (GaAsP) and 26% (GaAs), among the highest for intensified CCDs.

Conclusions:

• The combination of optical/electronic design and advanced data processing optimizes camera performance.
• Algol and CPNG represent significant advancements in photon counting camera technology for scientific imaging.
• These cameras offer high sensitivity and spatiotemporal resolution for demanding applications like biological imaging.