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학술지 Laser-Assisted Control of Electrical Oscillation in VO2 Thin Films Grown by Pulsed Laser Deposition
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저자
김봉준, 서기완, 최정용, 김현탁, 이용욱
발행일
201211
출처
Japanese Journal of Applied Physics, v.51 no.10, pp.1-5
ISSN
0021-4922
출판사
Japan Society of Applied Physics (JSAP),
DOI
https://dx.doi.org/10.1143/JJAP.51.107302
협약과제
12ZF1100, Seed형 기술개발을 위한 창의형 연구사업, 박선희
초록
By adjusting an optical power of an infrared laser illuminating a vanadium dioxide (VO 2) thin film, we have demonstrated a laser-assisted control of a field-induced electrical oscillation (FIEO) in a two-terminal device based on a VO 2 thin film fabricated by pulsed laser deposition. Through the control of the laser illumination power, the FIEO could be switched on or off with a fixed low DC bias voltage applied to the device that was connected in series with a standard resistor, and its frequency could be linearly tuned until the extinguishment of the oscillation. The tuning sensitivity of the oscillation frequency was measured as ~21.28 kHz/mW, showing good linearity with an R-squared value of 0.99288. In addition, the peak-to-peak amplitudes of the oscillation waveforms could also be linearly controlled by adjusting the illumination power. © 2012 The Japan Society of Applied Physics.
KSP 제안 키워드
Applied physics, Assisted control, DC bias voltage, Electrical oscillation, Field-induced, Infrared laser, Laser illumination, Laser-assisted, Optical power, Oscillation Frequency, Pulsed-laser deposition(PLD)