All-optical phase modulation system of quantum cascade laser
A quantum cascade and phase modulation technology, which is applied in the field of infrared laser spectroscopy and free space infrared optical communication, can solve the problems of large phase modulation coefficient, difficulty in obtaining high modulation coefficient pure phase modulation technology, and difficulty in realizing phase modulation, etc., to achieve High phase modulation coefficient, avoiding the effect of laser output intensity variation
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[0026] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.
[0027] The all-optical phase modulation quantum cascade laser used in the present invention can be manufactured by using existing technologies, such as molecular beam epitaxy equipment or metal organic compound chemical vapor deposition equipment.
[0028] Such as Figure 1 (a) As shown, the all-optical phase modulation quantum cascade laser is the basic structure of the manufactured quantum cascade laser (including: laser optical waveguide cladding A2, laser gain medium A5 and substrate A3, where gain medium A5 is a number of pairs of injection regions Formed in series with the active area, see figure 2 ), cut the laser along the direction of the laser cavity (that is, the X direction in the figure), and the cutting surface is on the plane shown by the dotted line in Figure 1, so that the laser gain medium A5 is exposed to form a quantum cascade l...
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