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[文献書誌] B.Widiyatmoko,K.Imai,M.kourogi and M.Ohtsu: "Second harmonic generation of optical frequency comb at 1.55 um using a periodically poled lithium niobete"Optics Letter. 24・5. 315-317 (1999)
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[文献書誌] C.Ishibashi,M.Kourogi,K.Imai,B.Widiyatmoko,A.Onae,and H.Sasada: "Absolute frequency measurement of the saturated absorption lines of methane at the 1.66 um region,"Optics Communication. 161. 223-226 (1999)
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[文献書誌] A.Onae,K.Okumura,J.Yoda,K.Nakagawa,A.Yamaguchi,,M.Kourogi,K.Imai and B.Widiyatomoko: "Towards an Accurate Frequency Standard at 1.5 um Based on the Acetylene Overtone Band Transition"IEEE Trans.Instrum.Meas.. 48・2. 563-56 (1999)
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[文献書誌] B.Widiyatmoko,M.Kourogi and M.Ohtsu: "Linking Two Optical Frequency Combs by Heterodyne Optical Phase Locking Between Diode Lasers at 2.6-THz Frequency-Difference"IEEE Photonics Technology Letters. 11・4. 460-462 (1999)