Improvement of Coherence Length in a 200 kHz Swept Light Source with a KTa
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概要
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For swept-source optical tomography, we demonstrate that the coherence length of a light source comprising a Littman--Metcalf external cavity with a KTa<inf>1-x</inf>Nb<inf>x</inf>O<inf>3</inf>(KTN) electrooptic deflector is increased by inserting an etalon into the cavity. Experimental results confirm that inserting the etalon into the laser cavity can significantly improve the coherence length of the laser output from 3.5 to around 23 mm at a 200 kHz repetition rate and 20 mW average output power in a 100 nm scanning range centered at 1.31 μm.
- 2013-12-25
著者
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Toyoda Seiji
Ntt Photonics Laboratories Ntt Corporation
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Sakamoto Takashi
Ntt Photonics Laboratories Ntt Corporation
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Kobayashi Junya
NTT Photonics Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan
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Sakamoto Takashi
NTT Photonics Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan
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Ueno Masahiro
NTT Photonics Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan
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Okabe Yuichi
NTT Photonics Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan
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Sasaki Yuzo
NTT Photonics Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan
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Naganuma Kazunori
KTN Business Division, NTT Advanced Technology Corporation, Atsugi, Kanagawa 243-0198, Japan
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Yagi Shogo
KTN Business Division, NTT Advanced Technology Corporation, Atsugi, Kanagawa 243-0198, Japan
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