| 摘要 |
PCT No. PCT/EP93/03301 Sec. 371 Date Jun. 5, 1995 Sec. 102(e) Date Jun. 5, 1995 PCT Filed Nov. 24, 1993 PCT Pub. No. WO94/13044 PCT Pub. Date Jun. 9, 1994A tunable [tunable] surface-emitting laser diode in which in the manner of the TTG laser diode an active layer (5) and a tuning layer (3) are arranged transverse to one another between contact layers (2, 6) and are separated from one another by a central layer (4), with the result that given suitable doping of the surrounding semiconductor material these layers can be driven separately, and in which above a region provided for generating radiation the semiconductor material has on the surface a spatial periodic structure which is provided with a thin metallic film (7), with the result that during operation of the laser diode radiation is emitted directionally from the surface by means of exciting surface plasmon polaritons, and that this emission direction can be varied by tuning the wavelength of the radiation.
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