In this case, we have used SiO2-AuNRs with peak optical absorption wavelengths separated only by 50 nm.
Since the index of refraction of optical glasses varies by only a few percent across the visible spectrum, different wavelengths are separated by small angles.
These architectures can address up to 6912 customers employing only 24 wavelengths, coarsely separated by 1.6 nm.
When both phase shifts are varied symmetrically from a quarter-wavelength phase shift π/2, such that one has a value of π/2−Δ θ and the other π/2+Δ θ, then the two resonant wavelengths separate symmetrically from each other with respect to the Bragg wavelength, while they remain equivalent in terms of their amplitude and line width.
This work demonstrates the possibility of detection of widely separated wavelength bands using interband and intersubband transitions in quantum wells.
This work demonstrates the possibility of detection of widely separated wavelength bands using intersubband transitions in quantum wells with a low dark current.
Although both NADH and FAD can be in principle simultaneously excited by two-photon absorption using the same excitation wavelength and spectrally separated on the detection, this would result in a reduced excitation efficiency for both fluorophores as well as in a higher cross-talk between the two signals.
Ray tracing software CODE V (Synopsys Inc) was used to evaluate the spectral resolution at five wavelengths (625 nm, 700 nm, 800 nm, 900 nm and 1000 nm) wherein the spectrometer is defined to have just two discrete wavelengths that are separated by the required spectral resolution at that wavelength and the PSF of the system was calculated.
In this paper a novel terahertz (THz) quantum cascade laser (QCL) based on GaN/AlGaN quantum wells has been proposed, which emits at two widely separated wavelengths 33 and 52 μm simultaneously in a single active region.
As the excitation and emission wavelengths are well separated in TPF spectrum, background excitation light can be effectively removed by optical filters, which leads to a high signal to noise ratio.
Usually, the most common wavelength used to detect separated DOM fractions is 254 nm, but more studies nowadays apply multi-wavelength detection (diode array detection, (DAD)) [14].
