Innovative SESAMs utilize iron-doped InGaAs absorbers for optimized ultrafast response and depth modulation.
We present versatile, strain-free, InP-based SESAMs with iron-doped InGaAs absorber, which facilitate all critical requirements for ultrashort pulse generation at 1560 nm: adjustable ultrafast response and modulation depth as well as low non-saturable losses.
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Dohms et al. (2025) studied this question.
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