Soviet Journal of Quantum Electronics
Highly sensitive projection system with a four-wave phase-conjugating mirror and an optical quantum amplifier
Oleg V. Kulagin, Guerman A. Pasmanik, Alexander A. Shilov
Abstract
An investigation was made of the feasibility of reaching the quantum limit of the sensitivity of a projection system with a brightness amplifier, including a laser amplifier and a phase-conjugating mirror. A sensitivity of about 5 photons per resolution element was achieved in the near infrared (λ = 1.06 μm) when the number of elements in the field of view was ~ 350 × 350.