### Abstract

Gain saturation coefficients of unstrained- and strained-layer multiple quantum-well lasers were measured experimentally. These coefficients were higher in lasers that had compressive strain in their active-layer wells: 2.45 x 10-17 cm3 with unstrained wells and 12.6 x 10-17 cm3 with strained wells. The higher gain saturation coefficient in lasers with strained active-layer wells is related to their higher linear TE mode gain coefficient. The linearity factor (K factor) between a laser's damping constant and the square of the laser's resonant frequency decreased slightly with introducing the strain in laser's active layer wells. This factor, however, took the value of about 0.2 x 10^{-9} s for each of these lasers. The α parameter of these lasers was also estimated: 3.1 for an unstrained-layer multiple quantum-well laser and 1.1 for a laser with compressive strain in the active-layer wells.

Original language | English |
---|---|

Pages (from-to) | 1294-1304 |

Number of pages | 11 |

Journal | IEEE Journal of Quantum Electronics |

Volume | 28 |

Issue number | 5 |

DOIs | |

Publication status | Published - 1992 |

Externally published | Yes |

### Fingerprint

### ASJC Scopus subject areas

- Electrical and Electronic Engineering
- Condensed Matter Physics
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy (miscellaneous)

### Cite this

*IEEE Journal of Quantum Electronics*,

*28*(5), 1294-1304. https://doi.org/10.1109/3.135269

**Measurement of Gain Saturation Coefficients in Strained-Layer Multiple Quantum-Well Distributed Feedback Lasers.** / Yasaka, Hiroshi; Takahata, Kiyoto; Naganuma, Mitsuru.

Research output: Contribution to journal › Article

*IEEE Journal of Quantum Electronics*, vol. 28, no. 5, pp. 1294-1304. https://doi.org/10.1109/3.135269

}

TY - JOUR

T1 - Measurement of Gain Saturation Coefficients in Strained-Layer Multiple Quantum-Well Distributed Feedback Lasers

AU - Yasaka, Hiroshi

AU - Takahata, Kiyoto

AU - Naganuma, Mitsuru

PY - 1992

Y1 - 1992

N2 - Gain saturation coefficients of unstrained- and strained-layer multiple quantum-well lasers were measured experimentally. These coefficients were higher in lasers that had compressive strain in their active-layer wells: 2.45 x 10-17 cm3 with unstrained wells and 12.6 x 10-17 cm3 with strained wells. The higher gain saturation coefficient in lasers with strained active-layer wells is related to their higher linear TE mode gain coefficient. The linearity factor (K factor) between a laser's damping constant and the square of the laser's resonant frequency decreased slightly with introducing the strain in laser's active layer wells. This factor, however, took the value of about 0.2 x 10-9 s for each of these lasers. The α parameter of these lasers was also estimated: 3.1 for an unstrained-layer multiple quantum-well laser and 1.1 for a laser with compressive strain in the active-layer wells.

AB - Gain saturation coefficients of unstrained- and strained-layer multiple quantum-well lasers were measured experimentally. These coefficients were higher in lasers that had compressive strain in their active-layer wells: 2.45 x 10-17 cm3 with unstrained wells and 12.6 x 10-17 cm3 with strained wells. The higher gain saturation coefficient in lasers with strained active-layer wells is related to their higher linear TE mode gain coefficient. The linearity factor (K factor) between a laser's damping constant and the square of the laser's resonant frequency decreased slightly with introducing the strain in laser's active layer wells. This factor, however, took the value of about 0.2 x 10-9 s for each of these lasers. The α parameter of these lasers was also estimated: 3.1 for an unstrained-layer multiple quantum-well laser and 1.1 for a laser with compressive strain in the active-layer wells.

UR - http://www.scopus.com/inward/record.url?scp=0026866927&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026866927&partnerID=8YFLogxK

U2 - 10.1109/3.135269

DO - 10.1109/3.135269

M3 - Article

VL - 28

SP - 1294

EP - 1304

JO - IEEE Journal of Quantum Electronics

JF - IEEE Journal of Quantum Electronics

SN - 0018-9197

IS - 5

ER -