Scanning apparatus to detect the spectral directivity of optically-emissive materials

Abstract

An apparatus that records the optical spectrum of emissive materials as a function of the polar coordinate angles is reported. The ability for the device to characterize the directive gain of a light source over the optical spectrum is demonstrated. The angular emission profile of an electrically driven LED with a hemispherical diffuser cap was measured. In addition, the device was used to characterize optically pumped materials exhibiting both fluorescence and amplified spontaneous emission (ASE), demonstrating its versatility for diverse emissive systems.

arXiv comment19 pages, 4 figures, submitted to Applied Optics on Feb 7 2025. 559074

References in corpus (4)

• Experimental and theoretical investigation of statistical regimes in random laser emission
• Random Lasing and Reversible Photodegradation in Disperse Orange 11 Dye-Doped PMMA with Dispersed ZrO${}_2$ Nanoparticles
• Low-cost automated spin coater and thermal annealer for additive prototyping of multilayer Bragg reflectors
• Neon tetra fish (Paracheirodon innesi) as farm-to-optical-table Bragg reflectors