Figure 5
Simulated and experimental spectra of the s-SPDC signals and idlers. (a) Simulated spectrum of the idlers including the non-collinear components. The radiated angle of 0.8 degree covered the range of 3390–3810 nm. (b) Spectra of up-converted idlers at different crystal temperatures and periodicities in which the idlers were phase-matched at different output angles. a: 21.5 µm and 60℃. b: 21.5 µm and 80℃. c: 21.5 µm and 100℃. d: 21.8 µm and 60℃. e: 21.8 µm and 100℃. f: 22.1 µm and 60℃. g: 22.1 µm and 80℃. h: 22.1 µm and 100℃. Simulation conditions a and h correspond to the collinear configuration. (c) Theoretical simulation and experimental spectrum of the total signals including the non-collinear configuration with covered range of 980–1013 nm. (d) Spectra of extracted signals using a narrow band-pass filter. The tolerant bandwidths were selected by tilting the filter. Simulation conditions i and o correspond to the collinear configuration.
