Effect of current modulation depth on the response of single-mode quantum-well heterolasers in the region of 1.5 μm

Autor:	V. K. Kononenko, B. F. Kuntsevich
Rok vydání:	2011
Předmět:	Physics Frequency response Pulse-frequency modulation business.industry Frequency drift Fundamental frequency Frequency deviation Condensed Matter Physics Amplitude modulation Optics Baseband business Lasing threshold Spectroscopy
Zdroj:	Journal of Applied Spectroscopy. 77:817-822
ISSN:	1573-8647 0021-9037
DOI:	10.1007/s10812-011-9407-z
Popis:	Numerical simulations are used to study the effect of pump current modulation depth on the response of quantum-well GaInAs–GaInAsP heterolasers at different lasing frequencies within the gain band as a function of the excess above threshold. It is shown that the amplitude-frequency characteristics of these laser emitters generally contain two local maxima. The low frequency maximum usually corresponds to a resonance for the 1/2 subharmonic and the high frequency maximum, to the fundamental. As the modulation depth is increased, the fundamental frequency decreases, while the resonance frequency for the 1/2 subharmonic can change monotonically or not. The behavior found here can be used to develop quantum-well heterolasers with specified modulation parameters.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3933b2749a04a11972aeaa50983240bf https://doi.org/10.1007/s10812-011-9407-z Zobrazit plný text záznamu Plný text ve formátu PDF