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- Balla, Prannay, et al.
(author)
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Post-compression of picosecond pulses to four optical cycles
- 2020
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In: High Intensity Lasers and High Field Phenomena, HILAS 2020. - 9781557528209
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Conference paper (peer-reviewed)abstract
- We report post-compression of 1.2 ps pulses into the few-cycle regime via multi-pass spectral broadening. We achieve compression factors of 40 in single and 93 in a dual stage scheme using a compact setup.
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- Balla, Prannay, et al.
(author)
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Postcompression of picosecond pulses into the few-cycle regime
- 2020
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In: Optics Letters. - 0146-9592. ; 45:9, s. 2572-2575
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Journal article (peer-reviewed)abstract
- In this work,we demonstrate postcompression of 1.2 ps laser pulses to 13 fs via gas-based multipass spectral broadening. Our results yield a single-stage compression factor of about 40 at 200 W in-burst average power and a total compression factor >90 at reduced power. The employed scheme represents a route toward compact few-cycle sources driven by industrial-grade Yb:YAG lasers at high average power.
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- de Oliveira, Vinicius Silva, et al.
(author)
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Intensity noise optimization of a mid-infrared frequency comb difference-frequency generation source
- 2020
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In: Optics Letters. - 0146-9592 .- 1539-4794. ; 45:7, s. 1914-1917
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Journal article (peer-reviewed)abstract
- We experimentally demonstrate in a difference-frequency generation mid-infrared frequency comb source the effect of temporal overlap between pump and signal pulses on the relative intensity noise (RIN) of the idler pulse. When scanning the temporal delay between our 130 fs long signal and pump pulses, we observe a RIN minimum with a 3 dB width of 20 fs delay and a RIN increase of 20 dB in 40 fs delay at the edges of this minimum. We also demonstrate active long-term stabilization of the mid-infrared frequency comb source to the temporal overlap setting corresponding to the lowest RIN operation point by an online RIN detector and active feedback control of the pump-signal pulse delay. This active stabilization setup allows us to dramatically increase the signal-to-noise ratio of mid-infrared absorption spectra. (C) 2020 Optical Society of America
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