本論文利用邁克森干涉儀與鎖頻二極體雷射，架設2-D的光晶格，並且使用MATLAB軟體模擬實驗結果。我們利用Rb原子的D2 line躍遷之超精細結構飽和吸收光譜，將波長780nm的外腔二極體雷射頻率穩定在(_^87)Rb |5S_(1/2),F=2>→|5P_(3/2),F’=2/3>的躍遷譜線上，由其穩頻的Error signal計算鎖頻後的雷射頻率不準度低於1.13MHz，然後將其引入邁克森干涉儀中。
實驗上為了得到經由光場作用而呈現穩定的週期性排列位能阱，我們將其中一面反射鏡放在Piezo-Electric Kinematic Mount上，讓干涉儀產生可調控的光程差進而形成週期性的干涉圖樣。在雷射鎖頻的情況下，我們可藉由干涉訊號測得2-D光晶格的對比度(visibility) V～90％。

In this thesis,the Michelson interferometer setup is used to construct a 2-D optical lattice and a steady state optical field of 2-D lattice is calculated using the MATLAB software to compare with the experimental results.
We locked the 780nm,external cavity diode laser to the atomic transition of(_^87)Rb |5S_(1/2),F=2>→|5P_(3/2),F’=2/3> by using the method of saturation absorption spectroscopy to the hyperfine structure of Rb atomic D2 line.The frequency stability is measured from the error signal of the locked laser and is less than 1.13MHz.The locked laser then is directed to form a Michelson interferometer.
In order to achieve a stable periodic potential of 2-D optical lattice which created by the interference between the optical fields, we mount one of the mirror on Piezo-Electric Kinematic Mount in one path of the Interferometer.The interference pattern can be observed by detected the interference fringes from the different optical path of the reflected laser lights. Visibility V from the interference pattern is determined to be about 90％.

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