| 释义 |
▪ I. lase, v.|leɪz|
[Back-formation from laser2, the ending -er being treated as the ending -er1 of agent nouns.]
intr. Of a substance, or an atom or molecule: to undergo the physical processes (of excitation and stimulated emission) employed in the laser; to function as the working substance of a laser. Of a device: to operate as a laser.
1962New Scientist 1 Feb. 270/3 This is well illustrated by the uses now being made of the entirely novel verb ‘to lase’... It is common currency among those..whose lives are given to the search for materials that will emit light in coherent and narrow-pencilled beams. 1963Ibid. 10 Jan. 65/3 Hitherto, only certain ionic crystals (notably ruby), some gas mixtures and..one or two liquids, had been persuaded to ‘lase’; that is, to emit coherent infrared or visible light of a single wavelength. 1963Ibid. 7 Feb. 293/2 Scientists at Standard Telecommunications Laboratories..last week persuaded their version of the gallium arsenide laser to ‘lase’. 1963Monsanto Mag. Mar. 10/2 Calculations..indicated that gallium arsenide would ‘lase’, or amplify light, if suitably stimulated. 1967Guardian 11 Feb. 1/1 Can X-ray lasers be made? There is no problem in getting substances to lase at the right frequency. 1969Sci. Jrnl. Apr. 55/2 The term ‘dye laser’ is generally used. Different dyes lase at different wavelengths and..it has been possible to span without a break the range 700–1000 nm by using some 20 different dyes. 1970Daily Tel. (Colour Suppl.) 28 Aug. 16/2 Not all atoms can be made to ‘lase’. 1971Sci. Amer. July 37/2 When the injection current becomes high enough so that the light in the crystal making a round trip along the junction plane is amplified enough to offset losses due to absorption, to scattering, to leakage out of the mirrors and so on, the diode is said to be lasing.
Hence ˈlasing ppl. a. and vbl. n.
1963Monsanto Mag. Mar. 9/3 Many variations have been produced since then, employing other solids, as well as gases and liquids, as ‘lasing’ materials. 1966Smith & Sorokin Laser vii. 369 The characteristics of these lasing diodes..differ considerably from those of other lasers. 1973Physics Bull. Dec. 723/1 Lasing at 145 nm in high pressure krypton has also been achieved..with intense electron beam pumping.
▪ II. lase
obs. form of lace; obs. Sc. form of lass. |