SLING 发表于 2025-3-23 10:30:56
Heine H. Hansen M.D.ernen optischen Messtechnik. Anschauliche Beispiele mit tabellarischen Zusammenfassungen und Abbildungen vermitteln dem Leser leichten Zugang zu Messverfahren hoher Komplexität, die die inzwischen erreichten Einsatzmöglichkeiten in Forschung und Technik und die sich daraus entwickelnden Marktchancenbifurcate 发表于 2025-3-23 14:53:44
Heine H. Hansen M.D.m sets have been added to enhance learning.Lasers are introdEver since their invention in 1960, lasers have assumed tremendous importance in the fields of science, engineering and technology because of their use both in basic research and in various technological applications. .Lasers: Theory and Ap疏忽 发表于 2025-3-23 20:26:23
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Heine H. Hansen M.D.o the quantum state . = 2 (Balmer series) involve the emission of radiation at wavelengths 410, 434, 486 and 656 nm, amongst others. However, laser operation in hydrogen atoms is prevented by the formation of stable H. molecules under normal conditions. Hence, dissociation of the molecules would be傲慢物 发表于 2025-3-24 08:41:33
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Heine H. Hansen M.D.reported by Robert N. Hall and others in 1962 using a diode structure. Initially, the operation was restricted to pulsed mode at low temperatures. With the invention of the double heterostructure (Sect. .), continuous wave lasing at room temperature was achieved in 1970. Today, semiconductor diode l