Quantum noise of laser diodes

Poizat, Jean‐Philippe; Grangier, Philippe

doi:10.1080/09500340008232200

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Cited by 47 publications

(2 citation statements)

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“…Ref. [3][4][5][6][7][8][9][10]). Furthermore, with the understanding of the intensity noise properties the control and the reduction of the laser noise, even below the standard quantum limit, became possible [11][12][13][14][15][16].…”

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confidence: 99%

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Intensity noise properties of quantum cascade lasers

Gensty¹,

Elsäßer²,

Mann³

2005

Opt. Express

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We present investigations of the the relative intensity noise (RIN) of a quantum cascade laser (QC) laser in continuous wave operation. We analyze the intensity noise properties in terms of the relative intensity noise (RIN). In contrast to conventional interband semiconductor diode lasers we obtain a different scaling behavior of RIN with increasing optical output power for QC lasers. From a semiclassical noise model we find that this result is due to the cascaded active regions each incorporating three laser levels, and is therefore a particular feature of QC lasers.

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“…The experimentally determined RIN of the QC laser in cw operation is depicted in Fig. 3 as a function of the emitted optical power P 0 measured in the low frequency limit [3,5,8] at a frequency ω of 40 MHz. The frequency of 40 MHz is much smaller than the relaxation oscillation frequency which is typically in the order of several GHz for QC lasers [25].…”

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confidence: 99%