1 / 12

120 likes | 286 Views

Spectroscopy of 3 S 1 state. Lee, Sun Kyung 2009. 9. 21. Outline. 3 S 1 state 분광의 의미 1 S 0 - 3 P 1 - 3 S 1 ladder type 에 optical pumping 에 의한 Yb I triplet state 분광

Download Presentation
## Spectroscopy of 3 S 1 state

**An Image/Link below is provided (as is) to download presentation**
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.
Content is provided to you AS IS for your information and personal use only.
Download presentation by click this link.
While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

**Spectroscopy of 3S1 state**Lee, Sun Kyung 2009. 9. 21**Outline**• 3S1 state 분광의 의미 • 1S0-3P1-3S1 ladder type 에 optical pumping에 의한 Yb I triplet state 분광 • 광격자 내 Yb 원자의 1S0-3P0 transition 분광에 가장 큰 영향을 미치는 Ac stark shift 계산에서 가장 sensitive parameter인 3P0-3S1 coupling 을 정의 • 1S0-3P0 transition 선폭 측정 시 normalization을 위한 repumping laser의 레이저 안정화 • 같은 setup으로 3P0-3D1 transition 분광과 레이저 안정화가 가능 • 같은 setup으로 넓은 선폭의 1S0-3P0 transition 분광 가능**Energy level**• Ladder type atom ( 1S0-3P1-3S1) • Driving field : 556, 680 nm • Fluorescence : 650, 680, 770 nm (branching ratio 1: 3: 5) • Pumping atoms from 1S0 to 3P1 and from 3P1 to 3S1 • Interaction time in atomic beam • v=300m/s, ∆t~30μs, • 3S1 linewidth ~10MHz • I~14mW, Is~4mW/cm2, I/Is > 10 3S1 5 1 3 λ=770nm λ=680nm λ=650nm 3P2 3P1 3P0 λ=556nm 1S0**Spectroscopy of 1S0-3P0 (578nm) may be done in another**atomic beam setup**Old Experimental setup**556nm Atomic Beam ECDL 770nm ECDL 680nm 680nm Iop=54mA Top=18.274(kΩ) TH10K ~13°C 770nm Iop=64mA Top=10.01(kΩ) TH10K ~25°C**Experimental setup**Lens λ/4 AOM Yb Atom λ/2 680nm ECDL**680 신호와 레이저 안정화**Before current modulation after current modulation**Depletion of ground state population**• 399 형광**EOM effect (One carrier and Two side mode) in AOM double**path setup Lee, Sun Kyung 2009. 9. 21

More Related