| 释义 |
acousto-|əˈkuːstəʊ|
comb. form of acoustic a. and n., as in acousto-eˈlectric a., involving the interaction of sound and electricity, esp. the generation of a voltage by a sound wave or stress wave; aˌcousto-elecˈtricity, electricity produced by sound waves or stress waves; acousto-electric phenomena; aˌcousto-elecˈtronics n. pl. (const. as sing.), a branch of electronics concerned with the application and use of acousto-electric phenomena; so aˌcousto-elecˈtronic a.; acousto-ˈoptic, -ˈoptical adjs., involving the interaction of sound and light, esp. the modulation or control of light by means of sound waves; so acousto-ˈoptically adv.; acousto-ˈoptics n. pl. (const. as sing.).
1953R. H. Parmenter in Physical Rev. LXXXIX. 990/2 We discuss the effect on the conduction electrons of a crystal resulting from a single traveling longitudinal acoustic wave in the crystal... There are a few electrons..capable of being trapped by the moving electric field... Those having a maximum energy will..give rise to a net electric current... Such a generation of an electric current by a traveling acoustic wave may be called the *acousto-electric effect. 1968New Scientist 23 May 402 Acousto-electric oscillators may also be useful for measuring changes in applied strain. 1984Aviation Week & Space Technol. 3 Dec. 78 A joint program..is under way to develop further a phase-insensitive ultrasonic transducer design based on the acoustoelectric rather than the piezoelectric response.
1959New Scientist 8 Jan. 86/2 (heading) *Acoustoelectricity. 1984Jrnl. Acoustical Soc. Amer. LXXVI. 826 Creation of an SH magnetoacoustic surface mode akin to the Bleustein–Gulyaev mode of acoustoelectricity.
1970Sci. Jrnl. May 46/3 At a minimum the *acousto-electronic elements must accommodate half a wavelength end to end to allow the coupling and amplifying function to take place between the two types of wave. 1984IEEE Trans. Sonics & Ultrasonics XXXI. 77/1 In mass produced acoustoelectronic devices..the cost of packaging makes up a significant proportion of the total cost of the device.
1968Sendai Symposium on Acoustoelectronics (Tohoku Univ.) 6 The term ‘*acoustoelectronics’ which has been used here in this Institute means a science of intermediate field between electronics and acoustics. 1975Proc. Symp. Optical & Acoustical Microelectronics 1974 625 The advantages of Gulyaev–Bleustein waves for acoustoelectronics are shown.
1967Jrnl. Appl. Physics XXXVIII. 5152/1 An *acousto-optic device. 1970New Scientist 7 May 285 The acousto-optic modulator is a prism of fused quartz..with an electro-acoustic transducer..on one end. 1971Nature 9 July 111/1 The focused light beam is made to scan rapidly over a selected area of the mirror by means of two acousto-optic light deflector cells. 1973McGraw-Hill Yearbk. Sci. & Technol. 143/2 Acoustooptic interaction..enables a tiny pencil-like laser beam to ‘write’ or make ‘dots’ of light in less than a millionth of a second.
1966Applied Optics V. 1674/1 The high center frequency would require a solid *acoustooptical medium. 1970New Scientist 21 May 377/1 Dr King has chosen rather to include an intermediate photographic recording stage and by doing so uses only one acousto-optical cell. 1982Defense Electronics June 40/3 A 500-MHz bandwidth acousto-optical processor, wide IF bandwidth receiver..provides spectral surveillance. 1983Ibid. Jan. 115/2 The *acousto-optically Q-switched Nd:YAG laser..provides high peak energies.
1969IEEE Jrnl. Quantum Electronics V. 331/1 Acoustooptic laser modulators provide time-bandwidth products of more than 20000 and the theoretical feasibility of reaching even higher values has made *acoustooptics one of the most potent and versatile laser modulation methods available today. 1972Sci. News 9 Dec. 381 Practical applications of acoustooptics are showing up in many areas where laser light may be used to gain or transmit information. 1983Washington Post 2 May (Business Suppl.) 40/4 Isomet designs and manufactures products that control lasers by acousto-optics, a technology that uses ultrasonic signals that are capable of diffracting beams of light. |