| Autor: |
Gross RW, Vall LG, Amimoto ST |
| Jazyk: |
angličtina |
| Zdroj: |
Optics letters [Opt Lett] 1992 Jan 01; Vol. 17 (1), pp. 82-4. |
| DOI: |
10.1364/ol.17.000082 |
| Abstrakt: |
We report an experimental investigation of an ultrasensitive coherent amplifier (USCA) operated at a 10-Hz repetition rate. We measure its quantum-noise-limited sensitivity, amplification, and image resolution. The USCA consisted of two Nd:YAG amplifiers in series with a high-gain four-wave Brillouin mirror with SnCl(4) as the Brillouin medium. We measure a noise-equivalent-energy sensitivity of 1.96 x 10(-19) J/mode or 1 photon/mode at a quantum efficiency of 96%. The system has an overall optical gain of 2.5 x 10(13). With a version of the USCA equipped with an imaging lens system, we demonstrate the amplification and phase conjugation of entire images with a resolution of 164 microrad across a field of view of 4 mrad or 21 x 21 resolution elements. To our knowledge, this is the first demonstration of a repetitively pulsed USCA. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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