As we know, the RIN of semiconductor laser may variy from -130dB/Hz to -155dB/Hz. What about that of solid-state laser? Does the solid-state laser have the same parameters?
Hi Richard: The RIN noise from a laser is not necessarily confined to some arbitrary range. You can have noisy semiconductor lasers just like you can have noisy or quiet lasers of other designs. You need to measure the noise. The best solid state performance with respect to RIN is usually obtained in a configuration like an NPRO laser http://www.innolight.de/index.php?id=mephisto. John
Hi, As both semiconductor laser and solid state lasers belong to class-B regime, so the expression for the RIN contains same parameters. As we know RIN depends upon many parameters, e.g, pump noise, existence of relaxation oscillations etc. Recently it has been shown that a very special kind of semiconductor laser known as VECSEL can belong to class-A regime, and thus the problem of relaxation oscillation in the relative intensity noise can be suppressed, which makes it possible to acheive very low RIN semiconductor laser (usually in the range which you had mentioned in your question). On the other hand in a solid state laser it is not possible to overcome this shortcoming, but recently it has been shown that the RIN due to antiphase relxation oscillation can be suppressed but still the in-phase part contribute, so it is not possible to acheive very low RIN solid state lasers. Here are some links related to these topics: (1) http://www.opticsinfobase.org/jlt/abstract.cfm?uri=jlt-26-8-952 and (2) https://www.researchgate.net/publication/230657491_Experimental_demonstration_of_a_dual-frequency_laser_free_fromanti-phase_noise
Article Experimental demonstration of a dual-frequency laser free fr...
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