摘要:
The invention relates to a direction-selective interferometric optical filter (30) for spectrometric devices, at least comprising an arrangement of two layered one-dimensional photonic structures (36, 37; 25a, 25b), wherein each of the two structures (36, 37; 25a, 25b) contains a defect layer (32, 34), wherein each photonic structure (36, 37; 25a, 25b) has a dispersion function (f1, f2) in the energy momentum space (E, kx, ky), wherein kx and ky are momentum components of transmitted photons of the photonic structures (36, 37, 25a, 25b) for a defined energy (frequency/wavelength) E in the energy momentum space (E, k x , k y ), wherein both photonic structures (36, 37; 25a, 25b) have opposite interfaces (42, 43) which are at a plane-parallel distance (D D ) from one another. In this case, the dispersion functions (f1, f2) of both photonic structures (36, 37; 25a, 25b) cross or intersect in the energy momentum space (E, k x , k y ) and produce a cut set (A) of rays of waves on the surfaces of the dispersion functions (f1, f2) at a particular energy (E), wherein a ray (A) of waves contains waves (11a, 11b) selectively chosen through the filter (30) at an angle, while other waves (13a, 13b) are reflected by the filter (30) at other angles.
标题翻译:VORRICHTUNG ZUR SPEKTROMETRISCHEN ERFASSUNG VON LICHT MIT EINER光电二极管DIE MONOLITHISCH死在SCHICHTSTRUKTUR EINESWELLENLÄNGENSELEKTIVENFILTERS INTEGRIERT IST
摘要:
The invention relates to an apparatus (1) for spectrometrically capturing light, at least comprising a wavelength-adjustable filter (20) for converting spectral information into location information and an organic photodiode (30) in the form of a detector for converting the location information into electrical signals which can be forwarded, wherein the filter (20) and the organic photodiode (30) form a one-piece monolith, wherein the organic photodiode (30) is connected to the filter (20) or the organic photodiode (30) is integrated in the filter (20), wherein the filter (20) consists of at least one spectrally resolving element in the form of at least one layer-like photonic crystal (21) which constitutes the monolith and in which two layers (2, 3) of variable thickness D are formed along a direction perpendicular to the incidence of light, wherein a resonant layer (4) is arranged between the two layers (2, 3), wherein the organic photodiode (30) making contact with the filter (20) consists of at least the following detector layers: - a photoactive layer (31), - a first electrode (33) of the photoactive layer (31) and - a second electrode (32) of the photoactive layer (31), wherein the photoactive layer (31) is situated between the two electrodes (33, 32) and one of the electrodes (33) is in contact with the photonic crystal (21). In this case, the detector layers (33, 32, 31): - the photoactive layer (31), - the first electrode (33) of the photoactive layer (31) and - the second electrode (32) of the photoactive layer (31) - are situated inside the resonant layer (4) of the photonic crystal (21) of the filter (20).
摘要:
The invention relates to an optical filter element (50) for devices (70) for converting spectral information into location information, using a connected detector (30) for detecting signals, said element having at least two microresonators (10, 11), a microresonator (10; 11) at least comprising - at least two superposed reflective layer structures (4, 6; 8, 9) which consist at least of a material layer (2) having a high refractive index and a material layer (3) having a low refractive index in an alternating sequence, as well as - at least one superposed resonance layer (5; 7) which is arranged between said two superposed reflective layer structures (4, 6; 8, 9). The filter element (50) comprises at least one transparent plane-parallel substrate (1) for optically decoupling said two microresonators (10, 11), the first microresonator (10; 11) being located on a first of the two opposing surfaces (51; 52) of said substrate (1), and the second microresonator (11; 10) being located on said substrate (1) on a second surface (54) thereof (1) that lies opposite the first surface (51), the resonance layer (5; 7) of at least one microresonator (10; 11), and/or the reflective layer structure (4, 6; 8, 9) that surrounds said resonance layer (5; 7), having a layer thickness which can vary along a horizontal axis (25) of said filter element (50).