Theoretical study of laser cooling of potassium chloride anion

Ming-Jie Wan; Hua-Feng Luo; Di Yuan; Song Li

doi:10.7498/aps.68.20190869

Journals >Acta Physica Sinica >Volume 68 >Issue 17 >Page 173102-1 > Article

Acta Physica Sinica
Vol. 68, Issue 17, 173102-1 (2019)

Theoretical study of laser cooling of potassium chloride anion

Ming-Jie Wan^1、*, Hua-Feng Luo², Di Yuan¹, and Song Li³

Author Affiliations

¹School of Physics and Electronic Engineering, Yibin University, Yibin 644007, China

²College of Chemistry & Chemical Engineering, Yibin University, Yibin 644007, China

³School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou 434023, China

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DOI: 10.7498/aps.68.20190869 Cite this Article

Ming-Jie Wan, Hua-Feng Luo, Di Yuan, Song Li. Theoretical study of laser cooling of potassium chloride anion[J]. Acta Physica Sinica, 2019, 68(17): 173102-1 Copy Citation Text

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Fig. 1. Potential energy curves of KCl^– anion: (a) Λ-S states; (b) Ω states. KCl^-阴离子的势能曲线　(a) Λ-S态; (b) Ω态

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Fig. 2. Dipole moments (DMs) of KCl^- anion. KCl^-阴离子的偶极矩

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Fig. 3. Transition dipole moments (TDMs) of KCl^– anion KCl^–阴离子的跃迁偶极矩

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Fig. 4. Proposed laser cooling scheme of KCl^– anion: (a) Using (2)1/2↔(1)1/2 transition; (b) using (1)3/2↔(1)1/2 transition. 激光冷却KCl^–阴离子的方案　(a) (2)1/2↔(1)1/2准闭合循环跃迁系统; (b) (1)3/2↔(1)1/2准闭合循环跃迁系统

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原子态	Ω态	ΔE/cm^–1
原子态	Ω态	计算值	实验值^[33]
K(²S_1/2) + Cl^–(¹S₀)	(1)1/2	0	0
K(²P_1/2) + Cl^–(¹S₀)	(2)1/2	12997.94	12985.17
K(²P_3/2) + Cl^–(¹S₀)	(3)1/2, (1)3/2	13046.23	13042.89

Table 1.

The dissociation relationship for the Ω states of KCl^– anion.

KCl^–阴离子Ω电子态的离解极限

Ω态	对应的Λ-S态	R_e/Å	ω_e/cm^–1	B_e/cm^–1	D_e/eV	T_e/cm^–1
(1)1/2	X²Σ⁺	2.8290	212.34	0.1143	1.3483	0
(2)1/2	A²Π	2.7839	229.64	0.1180	1.7976	9375.30
(1)3/2	A²Π	2.7836	229.65	0.1180	1.8018	9388.68
(3)1/2	B²Σ⁺	2.7550	235.48	0.1205	1.3865	12746.21

Table 2.

Spectroscopic parameters for the Ω states of KCl^– anion.

KCl^–阴离子的Ω态的光谱常数

跃迁		ν′′	0	1	2	3
注: ^a1.9384(7)表示1.9384 × 10⁷.
(2)1/2↔(1)1/2		A_{ν′ν′′}/s^–1	1.9384(7)^a	2.3044(6)	1.7867(5)	1.1906(4)
	ν′ = 0	f_{ν′ν′′}	0.8816	0.1090	0.0088	0.0006
		τ/ns	45.7
		A_{ν′ν′′}/s^–1	2.5793(6)	1.4757(7)	4.0633(6)	5.0295(5)
	ν′ = 1	f_{ν′ν′′}	0.1128	0.6687	0.1914	0.0246
		τ/ns	45.5
		A_{ν′ν′′}/s^–1	1.3368(5)	4.7122(6)	1.0816(7)	5.3057(6)
	ν′ = 2	f_{ν′ν′′}	0.0056	0.2052	0.4883	0.2490
		τ/ns	45.4
(1)3/2↔(1)1/2		A_{ν′ν′′}/s^–1	1.9451(7)	2.3276(6)	1.8184(5)	1.2242(4)
	ν′ = 0	f_{ν′ν′′}	0.8808	0.1096	0.0089	0.0006
		τ/ns	45.5
		A_{ν′ν′′}/s^–1	2.6063(6)	1.4777(7)	5.1089(5)	4.7631(4)
	ν′ = 1	f_{ν′ν′′}	0.1134	0.6668	0.1924	0.0249
		τ/ns	45.4
		A_{ν′ν′′}/s^–1	1.3578(5)	4.7578(6)	1.0803(7)	5.3483(6)
	ν′ = 2	f_{ν′ν′′}	0.0057	0.2063	0.4857	0.2499
		τ/ns	45.2

Table 3.

FCFs, spontaneous emission rates A_{ν′ν′′} and spontaneous radiative lifetime τ for the (2)1/2↔(1)1/2 and (1)3/2↔(1)1/2 transitions.

(2)1/2↔(1)1/2和(1)3/2↔(1)1/2跃迁的FCFs, A_{ν′ν′′}和τ

跃迁	f₀₀	A₀/s^–1	τ₀/s
注: ^a1.9384(7)表示1.9384 × 10⁷.
(3)1/2↔(1)1/2	0.7122	2.6535(7)	3.77(–8)
(3)1/2↔(2)1/2	0.9484	2.3716(5)	4.22(–6)
(3)1/2↔(1)3/2	0.9490	2.3435(5)	4.27(–6)

Table 4.

FCFs, total emission rates A₀ and τ for the (3)1/2↔(1)1/2, (3)1/2↔(2)1/2 and (3)1/2↔(1)3/2 transitions.

(3)1/2↔(1)1/2, (3)1/2↔(2)1/2和(3)1/2↔(1)3/2跃迁的FCF, 总辐射速率A₀和辐射寿命

Ming-Jie Wan, Hua-Feng Luo, Di Yuan, Song Li. Theoretical study of laser cooling of potassium chloride anion[J]. Acta Physica Sinica, 2019, 68(17): 173102-1

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