Investigation of a GaN-Based SAW Oscillator with respect to UV Illumination and Temperature |
| R. Miškinis a, D. Jokubauskis a, E. Urbaa, D. Smirnov a, L. Gaidamovičiūtė a, K. Mikalauskas a, A. Sereika b, R. Rimeika b, D. Čiplys b
aMetrology Department, Center for Physical Sciences and Technology, A. Goštauto st. 11, LT-01108, Vilnius, Lithuania bRadiophysics Department, Faculty of Physics, Vilnius University, Saulėtekio Ave. 9, bldg. III, LT-10222, Vilnius, Lithuania |
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| Oscillation frequency of a GaN-based surface acoustic wave delay-line oscillator is investigated in the temperature range from -20°C to +38°C, with and without UV illumination. The results imply that such an oscillator may be used for temperature sensing with the resolution of up to 1 mK. On the other hand, as the frequency downshift due to UV illumination does not exhibit a significant dependence on temperature, it may be expected that such a system, when used as a UV sensor, would not require applying a correction for temperature. |
DOI: 10.12693/APhysPolA.127.90 PACS numbers: 43.35.+d |