Influence of laser power on deposition of the chromium atomic beam in laser standing wave

• 来源期刊: 中国科学G辑（英文版）
• 年，卷（期）: 2009,（8）
• 页码范围: 1183-1186
• 页数: 4页
• 语种: 英文
• DOI: 10.1007/s11433-009-0161-7

摘要

One-dimensional deposition of collimated Cr atomic beam focused by a near-resonant Gaussian standing-laser field with wavelength of 425.55 nm is examined from particle-optics approach by using an adaptive step size, fourth-order Runge-Kutta type algorithm. The influence of laser power on depo-sition of atoms in laser standing wave is discussed and the simulative result shows that the FWHM of nanometer stripe is 102 nm and contrast is 2:1 with laser power equal to 3 mW, the FWHM is 1.2 nm and contrast is 32:1 with laser power equal to 16 mW, but with laser power increase, equal to 50 mW, the nonmeter structure forms the multi-crests and exacerbates.