Theoretical Analysis on the Simultaneous Operation of a Color-Center Laser and a -Switched Nd∶YAG Laser

1　Ｉｎｔｒｏｄｕｃｔｉｏｎ　　ＢｅｃａｕｓｅＬｉＦ∶Ｆ- 2 ｃｏｌｏｒ ｃｅｎｔｅｒｃｒｙｓｔａｌｈａｓｉｔｓｏｗｎｄｉｓｔｉｎｇｕｉｓｈｅｄｃｈａｒａｃｔｅｒｉｓｔｉｃｓ[1～ 5] ,ｉｔｈａｓｂｅｅｎｕｓｅｄａｓａｃｔｉｖｅｍｅｄｉｕｍｓ[4 ,6,7] ｏｒａｓｍｏｄｕｌａｔｅｄｅｌｅｍｅｎｔｓ[8,9] .Ｉｎｔｈｉｓｐａｐｅｒ,ｗｅｗｉｌｌｉｎｔｒｏｄｕｃｅａｎｏｔｈｅｒｋｉｎｄｏｆｕｓａｇｅ ,ｔｈａｔｉｓ ,ｉｔｉｓｕｓｅｄｂｏｔｈａｓａｎａｃｔｉｖｅｍｅｄｉｕｍｆｏｒｃｏｌｏｒｃｅｎｔｅｒｌａｓｅｒｔｕｎａ…     

Experimental Study on Intracavity SHG of a -Switched Tunable Cr∶LiSAF Laser

1　Ｉｎｔｒｏｄｕｃｔｉｏｎ　　Ｉｎｒｅｃｅｎｔｙｅａｒｓ,ｔｈｅｄｉｆｆｅｒｅｎｔｉａｌａｂｓｏｒｐｔｉｏｎｌｉｄａｒ (ＤＩＡＬ)ｈａｓｂｅｃｏｍｅｔｈｅｐｏｗｅｒｆｕｌｔｏｏｌｔｏｍｅａｓｕｒｅｔｈｅａｔｍｏｓｐｈｅｒｉｃ ｐｏｌｌｕｔｉｏｎ .ＮＯ2 ,ｉｔｓｃｈａｒａｃｔｅｒｉｓｔｉｃａｂｓｏｒｐｔｉｏｎｗａｖｅｌｅｎｇｔｈｓａｔ 4 4 8.1ｎｍａｎｄ 4 4 9.1ｎｍ ,ｉｓｏｎｅｏｆｔｈｅｍｏｓｔｉｍｐｏｒｔａｎｔｐｏｌｌｕｔｉｏｎｉｎａｔｍｏｓｐｈｅｒｅ .Ａｐｏｗｅｒｆｕｌｄｙｅｌａｓｅｒｐｕｍｐｅｄ…     

Influence of a magnetic field on the optical orientation of Γ6 × Γ8 hot excitons in cubic semiconductors

A calculation is performed of a hot polarized gG₆ × ₈ exciton luminescence excited in cubic semiconductors by polarized light and emitting longitudinal optical phonons before the emission decay. It is shown that the degree of linear and circular polarization of exciton emission does not, in general, depend monotonically on the field strength.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 7, pp. 85–89, July, 1984.The author is grateful to E. L. Ivchenko for his help in this work, and to G. E. Pikus for a discussion of results.     

An optical OFDM multiplexer and 16 × 10 Gb/s OOFDM system using serrodyne optical frequency translation based on LiNbO3 phase modulator

This paper proposes an all-optical orthogonal frequency division multiplexing (OFDM) multiplexer based on sawtooth wave driving LiNbO₃ phase modulators by using serrodyne optical frequency translation. This multiplexer has high integration ability. The designing concept and implementation method have been discussed. A 16 × 10 Gb/s optical OFDM system is designed based on this multiplexer. Transmission characteristics, including tolerances of polarization mode dispersion (PMD) and nonlinear impairments have been studied numerically. Simulations show that the PMD tolerance is about 42 ps. The spectral efficiency reaches 1 bit/s/Hz with binary modulation format.