Red diode-pumped alexandrite regenerative amplifier generating up to 78 μJ and down to 260 fs pulses
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Publication date
2026
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01A - Journal article
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Optics & Laser Technology
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202
Issue / Number
Pages / Duration
115435
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Elsevier
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Abstract
We present the first red diode-pumped alexandrite ultrafast amplifier, as well as the first red diode-pumped femtosecond alexandrite master oscillator power amplifier system. We achieved amplification of 90 fs pulses from nJ to μJ pulse energies and compression of the amplified pulses to 260 fs at 133 kHz, with a pulse energy of 2.5 μJ. A maximum pulse energy of 78 μJ is achieved at a repetition rate of 2 kHz. The amplifier output beam quality was good, with measured M 2 = 1.35.
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0030-3992
1879-2545
1879-2545
Language
English
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Yes
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Published
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peer-reviewed
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Hybrid
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Citation
Grätzer, T., Zeyen, M., Höck, M., & Resan, B. (2026). Red diode-pumped alexandrite regenerative amplifier generating up to 78 μJ and down to 260 fs pulses. Optics & Laser Technology, 202, 115435. https://doi.org/10.1016/j.optlastec.2026.115435