Approximate analytical expressions for pulse modulation response of quantum cascade lasers

• Main Authors: Yong, K.S.C., Haldar, Manas Kumar, Webb, Jeffrey Frank
• Format: Article
• Language: English
• Published: Taylor and Francis Ltd. 2018
• Subjects: T Technology (General)
• Online Access: http://ir.unimas.my/id/eprint/19444/1/Approximate-analytical-expressions-for-pulse-modulation-response-of-quantum-cascade-lasers_2018_Journal-of-Modern-Optics.html; http://ir.unimas.my/id/eprint/19444/; https://doi.org/10.1080/09500340.2017.1397219

Approximate analytical expressions for turn-on delay, rise time and fall time for pulse modulation of the drive current of quantum cascade lasers are presented. These time expressions are obtained using piece-wise analysis of rate equations. From the analytical expressions, the effects of laser parameters and off and on currents are discussed. A numerical analysis shows reasonable agreement with analytical results. It also confirms the predictions from analytical results. The pulse response is compared with that of near-infrared interband lasers. © 2017 Informa UK Limited, trading as Taylor & Francis Group.