激光腔(又称“谐振腔”):由两面或多面反射元件(常见为镜子)构成的光学结构,用来让光在其中来回反射并被增益介质放大,从而形成稳定的激光振荡;它决定了激光的模式、方向性、线宽等关键特性。
The laser cavity is formed by two mirrors facing each other.
激光腔由两面相对的镜子构成。
By carefully adjusting the length of the laser cavity, the engineer stabilized the resonant modes and reduced the linewidth.
通过精确调节激光腔的长度,工程师稳定了谐振模式并减小了线宽。
/ˈleɪzər ˈkævɪti/
laser 是首字母缩略词,来自 Light Amplification by Stimulated Emission of Radiation(“受激辐射的光放大”);cavity 源自拉丁语 cavus(“中空的”)。合起来 laser cavity 字面意思是“激光的中空腔体”,在光学里专指让光往返并满足谐振条件的“光学腔/谐振腔”。