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논문 기본 정보

자료유형
학술저널
저자정보
Ji Yong Joo (Kongju National University) Seok Gi Han (Kongju National University) Jun Ho Lee (Kongju National University) Hyug-Gyo Rhee (Korea Research Institute of Standards and Science) Joon Huh (Defense Industry Technology Center) Kihun Lee (Defense Industry Technology Center) Sang Yeong Park (Hanwha Systems)
저널정보
한국광학회 Current Optics and Photonics Current Optics and Photonics Vol.6 No.5
발행연도
2022.10
수록면
445 - 452 (8page)

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초록· 키워드

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We developed an adaptive optics test bench using an optical simulator and two rotating phase plates that mimicked the atmospheric turbulence at Bohyunsan Observatory. The observatory was reported to have a Fried parameter with a mean value of 85 mm and standard deviation of 13 ㎜, often expressed as 85 ± 13 ㎜. First, we fabricated several phase plates to generate realistic atmospheric-like turbulence. Then, we selected a pair from among the fabricated phase plates to emulate the atmospheric turbulence at the site. The result was 83 ± 11 ㎜. To address dynamic behavior, we emulated the atmospheric disturbance produced by a wind flow of 8.3 ㎧ by controlling the rotational speed of the phase plates. Finally, we investigated how closely the atmospheric disturbance simulation emulated reality with an investigation of the measurements on the optical table. The verification confirmed that the simulator showed a Fried parameter of 87 ± 15 mm as designed, but a little slower wind velocity (7.5 ± 2.5 ㎧) than expected. This was because of the nonlinear motion of the phase plates. In conclusion, we successfully mimicked the atmospheric disturbance of Bohyunsan Observatory with an error of less than 10% in terms of Fried parameter and wind velocity.

목차

Ⅰ. INTRODUCTION
Ⅱ. ATMOSPHERIC SIMULATOR: DESIGN AND ANALYSIS
Ⅲ. EXPERIMENT
Ⅳ. CONCLUSIONS
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