Two-frequency amplification in a semiconductor tapered amplifier for cold atom experiments

doi:10.1088/1674-1056/27/9/094201

中国物理B ›› 2018, Vol. 27 ›› Issue (9): 94201-094201.doi: 10.1088/1674-1056/27/9/094201

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Two-frequency amplification in a semiconductor tapered amplifier for cold atom experiments

Zhi-Xin Meng(孟至欣), Yu-Hang Li(李宇航), Yan-Ying Feng(冯焱颖)

State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China

收稿日期:2018-06-26 修回日期:2018-07-11 出版日期:2018-09-05 发布日期:2018-09-05
通讯作者: Yan-Ying Feng E-mail:yyfeng@tsinghua.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61473166).

Two-frequency amplification in a semiconductor tapered amplifier for cold atom experiments

Zhi-Xin Meng(孟至欣), Yu-Hang Li(李宇航), Yan-Ying Feng(冯焱颖)

State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China

Received:2018-06-26 Revised:2018-07-11 Online:2018-09-05 Published:2018-09-05
Contact: Yan-Ying Feng E-mail:yyfeng@tsinghua.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61473166).

摘要/Abstract

摘要：

Simultaneous two-frequency amplification is highly desirable in cold atom experiments. The nonlinear response would appear in the two-frequency amplification with a semiconductor tapered amplifier (TA) and has a direct influence on the experimental result. We investigated in detail the effects of frequency difference, total power, and power ratio of two seeding lasers on the output components based on a simplified theoretical model. The simulation results showed that the multiple sideband generation in the amplifier due to self-phase and amplitude modulation could be suppressed and the TA tended to linearly amplify the power ratio between two-frequency components, when the two seeding lasers had a large frequency difference. This was verified experimentally in the output power ratio measurement via a calibrated Fabry-Perot interferometer method with a good linearity and an uncertainty of 1%. We also discussed the consequences of power ratio responses in the amplification in light of cold atom experiments, especially in the ac Stark shift related phase error of Raman-type atom interferometers (AIs). It was shown that the fluctuation of intensity ratio of Raman beams may induce significant systematic errors for an AI gyroscope.

关键词: two-frequency amplification, self-phase modulation, laser cooling, atom interferometry

Abstract:

Key words: two-frequency amplification, self-phase modulation, laser cooling, atom interferometry

中图分类号: (Efficiency, stability, gain, and other operational parameters)

42.60.Lh

42.65.-k (Nonlinear optics) 37.25.+k (Atom interferometry techniques)

孟至欣, 李宇航, 冯焱颖. Two-frequency amplification in a semiconductor tapered amplifier for cold atom experiments[J]. 中国物理B, 2018, 27(9): 94201-094201.

Zhi-Xin Meng(孟至欣), Yu-Hang Li(李宇航), Yan-Ying Feng(冯焱颖). Two-frequency amplification in a semiconductor tapered amplifier for cold atom experiments[J]. Chin. Phys. B, 2018, 27(9): 94201-094201.

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Two-frequency amplification in a semiconductor tapered amplifier for cold atom experiments

Two-frequency amplification in a semiconductor tapered amplifier for cold atom experiments

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