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单词 Semiconductor lasers
释义

Semiconductor lasers

英语例句库

The semiconductor laser arrays are applied almost in all photoelectronics fields, and becoming an important technique in optoelectronics science at present.

半导体激光器阵列的应用已基本覆盖了整个光电子领域,成为当今光电子科学的重要技术。

中文百科

激光二极管 Laser diode

(重定向自Semiconductor lasers)
激光二极管的实物放大图
激光二极管发出可见激光
Imagen de un chip del diodo láser contenido en el paquete mostrado en la imagen superior. Se muestra en el ojo de una aguja que sirve de referencia de escala.
A laser diode with the case cut away. The actual laser diode chip is the small black chip at the front; a photodiode at the back is used to control output power.

激光二极管是一种激光产生器,其工作物质是半导体,属于固体激光产生器,大部份激光二极管在结讲上与一般二极管相似。由于激光二极管的运作中,电子的能量转变过程只涉及两个能阶,没有间接带隙造成的能量损失,所以效率相对高。能发光的半导体电子组件,透过三价与五价元素所组成的复合光源。此种电子组件早在1962年出现,早期只能够发出低光度的红光,被惠普买下专利后当作指示灯利用。及后发展出其他单色光的版本,时至今日,能够发出的光已经遍及可见光、红外线及紫外线,光度亦提高到相当高的程度。用途由初时的指示灯及显示板等;随著白光发光二极管的出现,近年逐渐发展至被普遍用作照明用途。

英语百科

Laser diode 激光二极管

(重定向自Semiconductor lasers)
Top: a packaged laser diode shown with a penny for scale. Bottom: the laser diode chip is removed from the above package and placed on the eye of a needle for scale.
A laser diode with the case cut away. The actual laser diode chip is the small black chip at the front; a photodiode at the back is used to control output power.
SEM (Scanning Electron Microscope) image of a commercial laser diode with its case and window cut away. The anode connection on the right has been accidentally broken by the case cut process.

A laser diode, or LD, is an electrically pumped semiconductor laser in which the active laser medium is formed by a p-n junction of a semiconductor diode similar to that found in a light-emitting diode.

The laser diode is the most common type of laser produced with a wide range of uses that include fiber optic communications, barcode readers, laser pointers, CD/DVD/Blu-ray Disc reading and recording, laser printing, laser scanning and increasingly directional lighting sources.

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更新时间:2025/6/18 3:19:12