Temporally flat top pulse generation from gain switched semiconductor lasers based on a polarization interferometer with variable transfer function

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• 作者：Antonio Consoli ; ^{antonio.consoli@upm.es" class="auth_mail} ; ^{antonio.consoli@icmm.csic.es" class="auth_mail} ; Ignacio Esquivias
• 关键词：Pulse shaping ; Polarization interferometer ; Flat top pulses ; Gain switched semiconductor lasers ; Picosecond phenomena
• 刊名：Optics Communications
• 出版年：15 October 2014
• 年：2014
• 卷：329
• 期：Complete
• 页码：214-220
• 全文大小：1294 K

文摘

We propose the use of a polarization based interferometer with variable transfer function for the generation of temporally flat top pulses from gain switched single mode semiconductor lasers. The main advantage of the presented technique is its flexibility in terms of input pulse characteristics, as pulse duration, spectral bandwidth and operating wavelength. Theoretical predictions and experimental demonstrations are presented and the proposed technique is applied to two different semiconductor laser sources emitting in the 1550 nm region. Flat top pulses are successfully obtained with input seed pulses with duration ranging from 40 ps to 100 ps.