New Frequency Stabilization Method of a Semiconductor Laser Using the Faraday Effect of the Rb-D2 Absorption Line
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概要
- 論文の詳細を見る
We have applied a precise amount of electrical feedback into laser injection current to stabilize the oscillation frequency of a semiconductor laser. This feedback method usually requires a small direct modulation to the laser injection current to obtain an error signal. This broadens the oscillation width of the laser diode, but certain applications, such as those related to coherent optical communications and measurements, require a narrower oscillation linewidth. Thus, we have attempted to obtain the error signal and stabilize the laser oscillation frequency in a narrower oscillation linewidth using the Faraday effect of the Rb absorption line. Our next task for the Faraday-effect-based method involves frequency stabilization, which we accomplish using a large frequency discrimination gain $G_{\text{d}}$. By incorporating our "PEAK" circuit, which utilizes the envelope detection method to determine the switching points between two different absorption signals, we increase $G_{\text{d}}$ in our improved PEAK methods.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-05-15
著者
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Sawamura Akihiko
C/o Sato Lab. Graduate School Of Science And Technology Niigata University
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Ohkawa Masashi
Faculty Of Engineering Niigata University
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ITO Shin-ichi
C/O Sato Lab., Graduate School of Science and Technology, Niigata University
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Nimonji Toshiya
C/o Sato Lab. Graduate School Of Science And Technology Niigata University
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Maruyama Takeo
Faculty Of Engineering Nagaoka Uniersity
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Sato Takashi
Faculty Of Bioresource Sciences Akita Prefectural University
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Nimonji Toshiya
C/O Sato Lab., Graduate School of Science and Technology, Niigata University, 8050 Ikarashi 2-no-cho, Niigata City 950-2181, Japan
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Ito Shin-ichi
C/O Sato Lab., Graduate School of Science and Technology, Niigata University, 8050 Ikarashi 2-no-cho, Niigata City 950-2181, Japan
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Ohkawa Masashi
Faculty of Engineering, Niigata University, 8050 Ikarashi 2-no-cho, Niigata City 950-2181, Japan
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Sawamura Akihiko
C/O Sato Lab., Graduate School of Science and Technology, Niigata University, 8050 Ikarashi 2-no-cho, Niigata City 950-2181, Japan
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Maruyama Takeo
Faculty of Engineering, Niigata University, 8050 Ikarashi 2-no-cho, Niigata City 950-2181, Japan
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