Fig. 4: Measurement results of bright squeezed light at 100 μW with the passive interference method (pre-stabilized by SHG). | Light: Science & Applications

Fig. 4: Measurement results of bright squeezed light at 100 μW with the passive interference method (pre-stabilized by SHG).

From: Bright squeezed light in the kilohertz frequency band

Fig. 4

Trace (a): measured technical noise of the free-running laser. Trace (b): measured RSN of the 100 μW optical power detected by ool-PD. Trace (c): Theoretical shot noise of 100 μW optical power. Trace (d): measured noise variance of the bright squeezed light across 2 kHz–1 MHz band. Trace (e): simulated noise variance of the bright squeezed light. Trace (f): technical noise of the laser passively stabilized by SHG. Trace (g): electronic noise of the ool-PD. Trace (h): uncorrelated sum of the noise sources (e–g). All measurements were performed using a spectrum analyzer (R&S FSW) at two frequency bands, 1–100 kHz and 100 kHz–1 MHz, with a resolution bandwidth (RBW) of 100 Hz and a video bandwidth (VBW) of 10 Hz

Back to article page