翻訳と辞書 Words near each other ・ Quantum computing ・ Quantum concentration ・ Quantum configuration space ・ Quantum contextuality ・ Quantum Conundrum ・ Quantum convolutional code ・ Quantum Corporation ・ Quantum correlation ・ Quantum cosmology ・ Quantum coupling ・ Quantum critical point ・ Quantum cryptography ・ Quantum cylindrical quadrupole ・ Quantum Darwinism ・ Quantum decoherence ・ Quantum defect ・ Quantum depolarizing channel ・ Quantum Detectors ・ Quantum differential calculus ・ Quantum digital signature ・ Quantum dilogarithm ・ Quantum dimer models ・ Quantum discord ・ Quantum dissipation ・ Quantum dot ・ Quantum dot cellular automaton ・ Quantum dot display ・ Quantum dot laser ・ Quantum dot solar cell ・ Quantum dynamical semigroup Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Quantum defect ： ウィキペディア英語版 Quantum defect The term quantum defect is ambiguous. Various meanings are discussed below. Characteristic is that the defect deals with the loss on the smallest energy scale of light: that of the quantum. ==Quantum defect in laser science== In laser science, the term quantum defect refers to the fact that the energy of a pump photon is generally higher than that of a ''signal photon'' (photon of the output radiation). The difference of energies goes to the heat; this heat may carry away the excess of entropy delivered with the multimode uncoherent pump. The quantum defect of a laser can be defined as part of the energy of the pumping photon, which is lost (not turned into photons at the lasing wavelength) in the gain medium at the lasing. At given frequency $~\backslash omega\_~$ of pump and given frequency $~\backslash omega\_~$ of lasing, the quantum defect $~q=\backslash hbar\backslash omega\_-\backslash hbar\backslash omega\_~$. Such quantum defect has dimension of energy; for the efficient operation, the temperature of the gain medium (measured in units of energy) should be small compared to the quantum defect. At a fixed pump frequency, the higher the quantum defect, the lower is the upper bound for the power efficiency. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Quantum defect」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.