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谐振腔发光二极管(Resonant Cavity LED,RCLED)是一种新型发光二极管,它具备了普通发光二极管和垂直腔面半导体激光器的优点,使半导体光源的单色性和波长稳定性都有了质的变化。由于谐振腔的限制,RCLED光谱的半高宽(Full Width at Half Maximum,FWHM)比普通发光二极管窄95%以上;另外,由于RCLED的谐振腔受温度等外因条件影响极小,光源也具有非常好的波长稳定性。这使RCLED作为单色光源在物理实验中应用成为可能。
Resonant Cavity LED (RCLED) is a new kind of light-emitting diode that has the advantages of ordinary LEDs and vertical-cavity semiconductor lasers, and has made some qualitative changes in the monochromaticity and the wavelength stability of semiconductor light sources . Due to the limitation of the resonant cavity, the full width at half maximum (FWHM) of the RCLED spectrum is more than 95% narrower than that of the ordinary light-emitting diode. In addition, since the cavity of the RCLED is minimally affected by external factors such as temperature, Good wavelength stability. This makes it possible to use RCLED as a monochromatic light source in physics experiments.