Pulsed twin beams of light
Pulsed twin beams of light have been generated using an optical-parametric amplifier that is pumped by the second harmonic of a mode-locked and Q- switched Nd:YAlG laser. The intensity noise levels on the direct-detected signal and idler beams are found to be correlated by more than 15 dB, and the s...
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| Veröffentlicht in: | Physical review letters 1990-09, Vol.65 (13), p.1551-1554 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | Pulsed twin beams of light have been generated using an optical-parametric amplifier that is pumped by the second harmonic of a mode-locked and Q- switched Nd:YAlG laser. The intensity noise levels on the direct-detected signal and idler beams are found to be correlated by more than 15 dB, and the subtracted noise falls below the quantum limit by more than 6 dB (75 percent). The measurements are in excellent agreement with the quantum theory of a nondegenerate optical-parametric amplifier. (Author) |
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| ISSN: | 0031-9007 1079-7114 |
| DOI: | 10.1103/PhysRevLett.65.1551 |