High-power frequency comb source tunable from 27 to 42  μm based on difference frequency generation pumped by an Yb-doped fiber laser

Soboń, Grzegorz; Martynkien, Tadeusz; Mergo, Paweł; Rutkowski, Lucile; Foltynowicz, Aleksandra

doi:10.1364/ol.42.001748

Cited by 66 publications

(26 citation statements)

References 28 publications

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“…Since only few MIR broadband laser gain media exist [11,15,24], many sources rely on nonlinear frequency conversion [18,25]. Among numerous frequency conversion methods utilizing χ (2) and χ (3) nonlinearities in materials, difference frequency generation (DFG) is a widely used method [4,7,14,17,20,23]. In the DFG method two near infrared (NIR) laser pulses, the pump and signal pulse interact in a χ (2) nonlinear crystal material and generate a MIR idler pulse, conserving photon energy and momentum [1].…”

Section: Introductionmentioning

confidence: 99%

Intensity noise optimization of a mid-infrared frequency comb difference-frequency generation source

et al. 2020

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We experimentally demonstrate in a difference-frequency generation mid-infrared frequency comb source the effect of temporal overlap between pump-and signal-pulse to 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 an 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 on-line RIN-detector and active feedback control of the pump-signal-pulse delay. This active stabilization set-up allowed us to dramatically increase the signal-to-noise ratio of mid-infrared absorption spectra.

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Section: Introductionmentioning

confidence: 99%

Intensity noise optimization of a mid-infrared frequency comb difference-frequency generation source

et al. 2020

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“…To achieve a broad mid-IR spectrum, highly nonlinear fiber (HNLF) is widely applied in DFG systems for NIR spectrum broadening. The oscillators split the output laser into two beams and nonlinearly broaden the NIR laser in HNLF [16][17][18][19][20] . By phase matching, the signal and pump pulses are focused into a crystal to generate an idler pulse in the mid-IR region.…”

Section: Introductionmentioning

confidence: 99%

Mid-infrared optical frequency comb in the 2.7–4.0 μm range via difference frequency generation from a compact laser system

Zhou

Liu

Xie

et al. 2020

High Pow Laser Sci Eng

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We report on the generation of a mid-infrared (mid-IR) frequency comb with a maximum average output power of 250 mW and tunability in the 2.7–4.0 μm region. The approach is based on a single-stage difference frequency generation (DFG) starting from a compact Yb-doped fiber laser system. The repetition rate of the near-infrared (NIR) comb is locked at 75 MHz. The phase noise of the repetition rate in the offset-free mid-IR comb system is measured and analyzed. Except for the intrinsic of NIR comb, environmental noise at low frequency and quantum noise at high frequency from the amplifier chain and nonlinear spectral broadening are the main noise sources of broadening the linewidth of comb teeth, which limits the precision of mid-IR dual-comb spectroscopy.

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“…Silfies contributed equally to this work. Corresponding author: thomas.allison@stonybrook.edu Thus, the generation of tunable or broadband high-power frequency combs has recently been a subject of intense study, particularly in the mid-and long-wave infrared [3,[9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Tunable visible frequency combs from a Yb-fiber-laser-pumped optical parametric oscillator

et al. 2019

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We present a 100 MHz repetition rate Ybfiber-laser-pumped synchronously pumped optical parametric oscillator (SPOPO) delivering tunable frequency combs covering almost the entire visible spectral range. By intracavity doubling both the signal and idler combs and using collinear residual pump light, nearly continuous tuning over the range of 420-700 nm is achieved with only small gaps near the OPO degeneracy condition. Output powers range from 10 mW to 200 mW, depending on wavelength, with pulse durations below 150 fs without external compression. Frequency locking of all three collinearly outcoupled combs (pump, doubled signal, and doubled idler) to a femtosecond enhancement cavity facilitates direct comparison of their optical phase noise and phase modulation transfer functions. In the singly-resonant OPO, optical phase modulation of the pump comb is transferred nearly completely to the nonresonant idler comb. This results in a resonant signal comb with reduced optical phase noise and also enables high-bandwidth modulation on the idler comb via phase modulation of the pump.

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High-power frequency comb source tunable from 27 to 42 μm based on difference frequency generation pumped by an Yb-doped fiber laser

Cited by 66 publications

References 28 publications

Intensity noise optimization of a mid-infrared frequency comb difference-frequency generation source

Intensity noise optimization of a mid-infrared frequency comb difference-frequency generation source

Mid-infrared optical frequency comb in the 2.7–4.0 μm range via difference frequency generation from a compact laser system

Tunable visible frequency combs from a Yb-fiber-laser-pumped optical parametric oscillator

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