Noise minimization in optical detection of small particle
| dc.creator | Plakhotnik, Taras | |
| dc.date | 2006-12-08 | |
| dc.date.accessioned | 2026-07-07T07:34:59Z | |
| dc.date.available | 2026-07-07T07:34:59Z | |
| dc.description | The ultimate sensitivity of optical detection is limited by the signal-to-noise ratio (SNR). The first part of the paper shows that coherence plays an important role in the noise analysis. Although interference between an auxiliary wave and a signal wave makes the photo detector response to the signal stronger, the coherent noise also enhances. This makes insignificant the gain in the SNR. Pulsed-excitation gated-detection (PEGD) is described and analyzed in the second part to show that 1) a high brightness of detected particles is not a prerequisite for a high SNR, 2) optimized parameters of the PEGD protocol demonstrate interesting bifurcation making a sudden jump from an effectively continuous regime to PEGD, and 3) photo-physical properties of NV centers in nano crystals of diamond approach those ideal for PEGD. | |
| dc.description | 12 pages incl 3 figures | |
| dc.identifier | https://arxiv.org/abs/physics/0612078 | |
| dc.identifier | http://arxiv.org/abs/physics/0612078 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/119959 | |
| dc.subject | Optics | |
| dc.title | Noise minimization in optical detection of small particle | |
| dc.type | text |