Distribution feedback external cavity narrow line board semi-conductor laser for achieving frequency self-locking
A distributed feedback, semiconductor technology, applied in the direction of semiconductor lasers, lasers, laser components, etc., can solve the problems that semiconductor lasers cannot effectively apply interferometric systems, affect system performance, laser modulation rate, semiconductor laser beam divergence, etc., to achieve gain enhancement , Improve the side mode suppression ratio and narrow the line width of the light source
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[0025] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to specific embodiments and drawings.
[0026] Such as figure 1 As shown, figure 1 It is a distributed feedback external cavity narrow linewidth semiconductor laser for realizing frequency self-locking provided by the present invention, including:
[0027] A single-ended output semiconductor laser a, the left end surface is coated with a reflective film, and the right end light outlet is coated with an anti-reflection coating; this way, on the one hand, the laser generated by the laser can be output as much as possible, and on the other hand, the light feedback from the right end can be as much as possible Enter the active area of the semiconductor laser;
[0028] A collimating lens b, which makes the light emitted from the semiconductor laser a pass through the following optical elements in para...
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