Laser cooling of Chromium atoms for nanofabrication

用于纳米加工的铬原子激光冷却

• 批准号: 13450030
• 负责人: INOUYE Yasushi
• 金额: $ 8.26万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13450030/
• 关键词: atom optics; Jl Bessel beam; nanotechnology; laser cooling; scattering force; transition metal; photonic control patterning; gradient force; Zeeman slowing; 量子細線; 光の勾配力

We have established optical methods for controlling and manipulation of chromium atoms via radiation pressure, and have developed technology for fabrication of nanostructures using the methods. Especially, we achieved the methods using a laser diode which is suitable for industrial applications, and successfully fabricated one-dimensional periodic nanostructures (width : 150 nm, height : 6.7 nm, periodicity : 212.78 nm). This result was reported in SPIE's OE Magazine for its practicability. Furthermore, we developed elementary techniques, such as precise laser frequency control of which variation is less than 2 MHz. We also proposed guiding technology of atoms in light potential of J, Bessel beam which is formed by ring illumination optics or axicon prism. Deduced from numerical analysis of motion of atoms in the potential, atoms are well confined and guided in the beam. The numerical analysis also let us know the importance for reduction of broadening of atom velocity for fabricating finer structures. Then, we designed and developed a Zeeman slower which decelerates atoms efficiently.

我们已经建立了通过辐射压力控制和操纵铬原子的光学方法，并开发了使用这些方法制造纳米结构的技术。尤其是，我们使用适合工业应用的激光二极管实现了这些方法，并成功制造了一维周期性纳米结构（宽度：150 nm，高度：6.7 nm，周期性：212.78 nm）。 SPIE的OE杂志的实用性报告了这一结果。此外，我们开发了基本技术，例如精确的激光频率控制，其变异小于2 MHz。我们还提出了由J，Bessel Beam的光电势中的原子指导技术，该技术由环照明光学器件或Axicon Prism形成。根据原子在电势中的运动的数值分析中得出，原子在梁中被很好地限制并引导。数值分析还让我们知道减少原子速度扩大的重要性，以制造更精细的结构。然后，我们设计并开发了一个慢慢的Zeeman，该采率有效地减速了原子。

项目成果

Y.Inouye: "7.3 Nano-patterning of metal structures based on atom optics"Nanotechnology Handbook Vol.I Fabrication (Nanotechnology Handbook Editorial Committee ed.) (Ohmsha, Tokyo). 255-262 (2003)

Y.Inouye：“7.3 基于原子光学的金属结构的纳米图案化”纳米技术手册第一卷制造（纳米技术手册编辑委员会编辑）（Ohmsha，东京）。

N.Hayazawa: "Near-field Raman imaging of organic molecules by an apertureless metallic probe scanning optical microscope"J.Chem.Phys.. 117. 1296-1301 (2002)

N.Hayazawa：“通过无孔金属探针扫描光学显微镜对有机分子进行近场拉曼成像”J.Chem.Phys.. 117. 1296-1301 (2002)

T.Masaki: "Near-field infrared imaging of molecular changes in cholesteryl oleate by free electron laser infrared ablation"J.Appl.Phys.. 95. 334-338 (2004)

T.Masaki：“通过自由电子激光红外烧蚀对胆固醇油酸酯分子变化进行近场红外成像”J.Appl.Phys.. 95. 334-338 (2004)

H.-B.Sun: "Laser-diode-tuned sequentially laser atom cooling and trapping for nanofabrications"Jpn.J.Appl.Phys.. 40. L711-L714 (2001)

H.-B.Sun：“用于纳米加工的激光二极管调谐顺序激光原子冷却和捕获”Jpn.J.Appl.Phys.. 40. L711-L714 (2001)

A.Tarun: "Apertureless optical near field fabrication using atomic force microscope on photoresists"Appl.Phys.Lett.. 80. 3400-3402 (2002)

A.Tarun：“使用原子力显微镜在光刻胶上进行无孔径光学近场制造”Appl.Phys.Lett.. 80. 3400-3402 (2002)