A semiconductor laser device comprised of GaInP/AlGaInP materials which efficiently produces visible light output with improved carrier confinement and decreased threshold current density levels. The laser diode uses a strained quantum well positioned between a pair of graded index confinement layers which ...
An acousto-optical spectrometer has been constructed using a visible laser diode light source. The advantages of a visible laser diode in this application over the more prevalent infrared laser diodes are discussed. These include increased Bragg cell bandwidth and diffraction efficiency, and easier ...
(125 dB/km) Compared to the windows at 520 nm and 570 nm, it not only has higher loss but also narrower band, and results in some problems. For example, when laser diodes or light-emitting diode is used as the light source and operated for long time, light source wavelength offset ...
Nonlinear optics and direct lasing of gain materials4-6 are the techniques for getting the visible lasers, beside the visible laser diodes which have relatively poor coherence8,9. In contrast to lasers achieved by nonlinear frequency-shifting of infrared lasers10, direct lasing has the advantages ...
(ΔEST, Fig.1a)28,30,31,32. This unique feature of the sensitizer offers several advantages for visible-light photochromism: (1) The triplet population for efficient TTET process is enriched, which facilitates the intersystem crossing (ISC) and sensitization33. (2) The D-A structure provides...
Keeping in view the above advantages, VLC is one of the promising candidates because of its features of non-licensed channels, high bandwidth and low power consumption. Download: Download high-res image (110KB) Download: Download full-size image Fig. 2. VLC frequency spectrum. Potential ...
The above and other aspects, features, and advantages of the disclosure will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. 1 is a block diagram of an electronic device according to various embodiments in a network envir...
Compared with semi-polar or non-polar micro-LEDs, the commercial polar micro-LED has the advantages of low cost and more mature epitaxy technique. In this study, green micro-LEDs with different indium tin oxide (ITO) sizes are fabricated based on the commercial c-plane LED epitaxial wafer. ...
Among many kinds of TCO, aluminum-doped ZnO (AZO) thin film shows the advantages of abundance in nature, low cost, non-toxicity, high transparency in visible range and reaction stability in hydrogen plasma [5], [6], [7], [8]. Generally, high-quality AZO films are prepared by pulsed ...
Given these advantages, visible pAFM is expected to become widely used for research in such diverse fields as physics, biology, chemistry, medicine and material sciences. Materials and methods Glass and polyvinyl chloride sample preparation As samples, we used commercially available optically transparent...