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제126회 대한화학회 학술발표회 및 총회 Scattering of adiabatically aligned molecules by nonresonant optical standing waves

등록일
2020년 9월 17일 15시 38분 36초
접수번호
1159
발표코드
PHYS.P-239 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 21일(수) 17:30~18:00
발표형식
포스터
발표분야
Physical Chemistry
저자 및
공동저자
Tae Woo Kim, Bum Suk Zhao1,*
Department of Chemistry, Ulsan National Institute of Science and Technology, Korea
1Department of Chemistry, Department of Physics, Korea
We study the effect of rotational state-dependent alignment in the scattering of molecules by optical fields. CS2 molecules in their lowest few rotational states are adiabatically aligned and transversely accelerated by a nonresonant optical standing wave. The width of the measured transverse velocity distribution increases to 160 m/s with the field intensity, while its central peak position moves 10 to -10 m/s. These changes are well reproduced by numerical simulations based on the rotational state-dependent alignment but cannot be modeled when ignoring these effects. Moreover, the molecular scattering by an off-resonant optical field amounts to manipulating the translational motion of molecules in a rotational state-specific way. Conversely, our results demonstrate that scattering from a nonresonant optical standing wave is a viable method for rotational state selection of nonpolar molecules.

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