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High repetition rate femtosecond VIS radiation is normally generated in optical parametric oscillators (OPOs) either by generating VIS light via intra-cavity SHG or SFG [1, 2] or in VIS OPOs employing Ti:sa as a pump laser [3, 4]. Recently we demonstrated an efficient intra-cavity SFG in a non-collinear OPO (NOPO) pumped by thin disk oscillator [5]. Here, we present a NOPO system, pumped by the high...
High repetition rate femtosecond VIS radiation has been generated in optical parametric oscillators (OPOs) either by generating VIS light through intra-cavity SHG or SFG [1, 2] or in VIS OPOs using frequency-doubled Ti:sapphire as a pump laser [3, 4]. Recently, we also demonstrated the generation of VIS light via efficient intra-cavity SFG in NIR NOPO pumped by a thin disk laser [5]. In this work,...
Optical parametric oscillators offer significant advantages over solid-state laser systems in terms of their wavelength versatility as well as in their tuning bandwidth and speed. However, these systems are complex to use and their output power is often limited to a few hundred mW, especially when using a Ti: sapphire laser as a pump source. Recently, a high power, ultrabroadband non-collinear optical...
We present a fast-tunable femtosecond NIR NOPO simultaneously delivering visible pulses from 412 to 500 nm generated via efficient intracavity sum-frequency generation and rapidly tunable over the whole range by varying the resonator length only.
The efforts for developing systems which allow for fast and sensitive acquisition of Raman spectra are part of ongoing research. For instance narrowband stimulated Raman scattering (SRS) microscopy with an OPO rapidly tuned by an electro-optical modulator over of a span of 115 cm−1 has been reported just recently [1]. We present the fast acquisition of broadband Raman spectra covering a lager range...
We present a two-color pumped OPCPA system delivering spectra from 430 nm to 1.3 μm offering a Fourier limited pulse duration of sub-3 fs. Compression to sub-5 fs of the inner part is shown.
Meanwhile, optical parametric chirped pulse amplification (OPCPA) systems are routinely used to generate highly intense, few-cycle laser pulses. In this contribution, we present a compact two-stage parametric amplification scheme generating pulses with up to 3 µJ of energy, duration below 6 fs, and high repetition rates between 100 and 500 kHz. Additionally, the pulses are stabilized with respect...
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