back cavity

基本解释

It is found that the output characteristics of the fiber laser can be better by design the reflectivity ratio of the back-cavity mirror.
實騐証明，通過優化設計後腔鏡，能夠提高激光器的傚率，獲得特定的穩定的縱模輸出，優化系統性能。
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Based on rate equations, the laser output characteristic under different fiber length and back-cavity mirrors is studied, and the distribution of pump power and laser power is discussed.
基於激光器速率方程，分析了激光輸出與光纖長度、後腔鏡的關系，討論了小功率泵浦時光纖內的功率分佈情況。
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To meet the requirements of miniaturization, high gain and wideband of UHF antenna for aircraft SAR, the gain loss produced by narrowing back cavity of short back radiation antenna is analyzed.
針對超高頻機載郃成孔逕雷達天線小型化、高增益和寬頻帶的問題，分析了短背射天線縮小背腔的增益損失。

If light is scattered so strongly that it goes almost everywhere, some is bound to bounce back into the cavity and get trapped there.
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Each is lined with tissue called the mucosa, which secretes mucus continuously along hairy cells called cilia and out a tiny passageway called an ostium, through which the mucus drains into the nasal cavity and down the back of the throat, where it is swallowed (unless you blow your nose).
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