Efficient Optical Phase modalation using A Semiconductor Optical Amplifier

Gliese, U.; Nielsen, Theodor; Mikkelsen, B.; Stubkjaer, K.E.

doi:10.1109/leosst.1991.665295

Cited by 1 publication

(3 citation statements)

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“…For a significant difference in the operating density in the sections, the variations in the mode gain and the waveguide refractive index in them will be char acterized by different derivatives, i.e. different values of R. It is precisely due to different R values that a phase change by π was achieved in [27]. However, as follows from the calcula tions of [42] and from the experiment [43], it should be dif ficult to obtain, in this way, a more than twofold difference in R, while remaining within the permissible operating pumping ranges.…”

Section: Discussionmentioning

confidence: 99%

“…Two and threesection diode lasers were used in many works (see, for example, [21][22][23][24][25][26][27][28][29][30]). Much attention was paid there to the modulation characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…A method for phase modulation in a twosection ampli fier due to an antiphase current modulation in each of the sections was proposed in [27]. The calculation showed that in such devices one can achieve a phase modulation with π amplitude at the residual intensity modulation of no less than 0.8 dB.…”

Section: Introductionmentioning

confidence: 99%

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Diode optical amplifier with phase control of the output wave for high-power laser systems with coherent beam combining

Bogatov

Drakin

2019

J. Phys. D: Appl. Phys.

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A three-section optical diode amplifier is simulated, whose sections have different amplitude-phase coupling coefficients R (linewidth enhancement factors). We show that it is possible to change the output wave phase for a constant output power due to only a difference in the value of this coefficient. In a single-mode amplifier, the first section has a horizontal waveguide formed by the gain (gainguided), and the other two sections are formed by change of the refractive index (index-guided). The values of the current in the first two sections are found, at which the phase changes by more than 2π at a constant output power of 2W. Such amplifiers can be integrated into single-crystal bars, which makes them adaptive for use in kilowatt laser systems with a coherent combining of beams.

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Section: Discussionmentioning

confidence: 99%

“…Two and threesection diode lasers were used in many works (see, for example, [21][22][23][24][25][26][27][28][29][30]). Much attention was paid there to the modulation characteristics.…”

Section: Introductionmentioning

confidence: 99%