骄傲
发表于 2025-3-23 12:24:15
,The Laser — An Unprecedented Light Source,R (.icrowave .mplification by .timulated .mission of .adiation) which was invented in 1954. Around the time when the laser was invented in 1960, it was called an optical maser or an infrared maser. The word laser has been generally accepted since about 1965.
命令变成大炮
发表于 2025-3-23 15:25:42
The Coherence of Light,nd diffraction with the use of a monochromatic spectral light source, it is now possible to observe them in an ordinary room in daylight by using a laser light source. The phenomena of interference and diffraction of light are due to the wave nature of light, which will be discussed in this chapter.
Pelago
发表于 2025-3-23 18:07:16
Electromagnetic Theory of Light,es, according to Maxwell’s equations. In contrast, the particle nature of light is expressed through the idea of a light quantum or a photon resulting from quantization of the electromagnetic field. However, the coherence of laser light is much better than that of other forms of light, and it is onl
男生如果明白
发表于 2025-3-23 22:59:59
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规章
发表于 2025-3-24 04:41:05
Principle of the Laser,apter an elementary theory of laser action is presented with the help of circuit theory and rate equations. The semiclassical theory and the quantum-mechanical theory of the laser are deferred to Chap. 9.
无节奏
发表于 2025-3-24 08:12:32
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intrigue
发表于 2025-3-24 12:16:42
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mechanical
发表于 2025-3-24 16:34:38
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ticlopidine
发表于 2025-3-24 20:02:41
Theory of Laser Oscillation,ion by taking the phase into consideration, so that the interaction between atoms and laser radiation may be treated not merely as a probability of induced emission but as a coherent interaction. Such theories can be classified into two types: the semiclassical theory in which light is treated as cl
歌曲
发表于 2025-3-25 01:47:24
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