# Effect of the nonlinear saturation of the gain on the peak modulation frequency in lasers based on self-assembled quantum dots

## Abstract

Peak modulation frequency of lasers based on self-organized quantum dots is calculated taking into account the effect of nonlinear gain saturation. Because of a large nonlinear gain coefficient and a reduction in the differential gain with increasing optical losses, the peak modulation frequency is attained for an optimum loss level that is significantly lower than the saturated optical gain in the active region. For lasers based on multiply stacked arrays of quantum dots, the peak modulation frequency first increases with increasing number of quantum-dot layers before leveling off, with the limiting value being inversely proportional to the nonlinear gain coefficient.

- Authors:

- Russian Academy of Sciences, St. Petersburg Academic University, Nanotechnology Research and Education Center (Russian Federation)
- Russian Academy of Sciences, Ioffe Physical Technical Institute (Russian Federation)

- Publication Date:

- OSTI Identifier:
- 22004766

- Resource Type:
- Journal Article

- Journal Name:
- Semiconductors

- Additional Journal Information:
- Journal Volume: 45; Journal Issue: 7; Other Information: Copyright (c) 2011 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7826

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 36 MATERIALS SCIENCE; GAIN; LASERS; LAYERS; LIMITING VALUES; MODULATION; NONLINEAR PROBLEMS; PEAKS; QUANTUM DOTS; SATURATION

### Citation Formats

```
Zhukov, A. E., E-mail: zhukov@beam.ioffe.ru, Arakcheeva, E. M., Gordeev, N. Yu., Zubov, F. I., Kryzhanovskaya, N. V., Maximov, M. V., and Savelyev, A. V.
```*Effect of the nonlinear saturation of the gain on the peak modulation frequency in lasers based on self-assembled quantum dots*. United States: N. p., 2011.
Web. doi:10.1134/S1063782611070244.

```
Zhukov, A. E., E-mail: zhukov@beam.ioffe.ru, Arakcheeva, E. M., Gordeev, N. Yu., Zubov, F. I., Kryzhanovskaya, N. V., Maximov, M. V., & Savelyev, A. V.
```*Effect of the nonlinear saturation of the gain on the peak modulation frequency in lasers based on self-assembled quantum dots*. United States. doi:10.1134/S1063782611070244.

```
Zhukov, A. E., E-mail: zhukov@beam.ioffe.ru, Arakcheeva, E. M., Gordeev, N. Yu., Zubov, F. I., Kryzhanovskaya, N. V., Maximov, M. V., and Savelyev, A. V. Fri .
"Effect of the nonlinear saturation of the gain on the peak modulation frequency in lasers based on self-assembled quantum dots". United States. doi:10.1134/S1063782611070244.
```

```
@article{osti_22004766,
```

title = {Effect of the nonlinear saturation of the gain on the peak modulation frequency in lasers based on self-assembled quantum dots},

author = {Zhukov, A. E., E-mail: zhukov@beam.ioffe.ru and Arakcheeva, E. M. and Gordeev, N. Yu. and Zubov, F. I. and Kryzhanovskaya, N. V. and Maximov, M. V. and Savelyev, A. V.},

abstractNote = {Peak modulation frequency of lasers based on self-organized quantum dots is calculated taking into account the effect of nonlinear gain saturation. Because of a large nonlinear gain coefficient and a reduction in the differential gain with increasing optical losses, the peak modulation frequency is attained for an optimum loss level that is significantly lower than the saturated optical gain in the active region. For lasers based on multiply stacked arrays of quantum dots, the peak modulation frequency first increases with increasing number of quantum-dot layers before leveling off, with the limiting value being inversely proportional to the nonlinear gain coefficient.},

doi = {10.1134/S1063782611070244},

journal = {Semiconductors},

issn = {1063-7826},

number = 7,

volume = 45,

place = {United States},

year = {2011},

month = {7}

}

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