Ultraviolet dual comb spectroscopy: a roadmap

Schuster, Vittoria; Liu, Chang; Klas, Robert; Dominguez, Pablo Nahuel; Rothhardt, Jan; Limpert, Jens; Bernhardt, Birgitta

doi:10.1364/oe.424940

Cited by 19 publications

(6 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ultrafast thin-disk oscillators have been demonstrated with average powers approaching 300 W and peak powers as high as 62 MW. Extension toward UV and VUV range 44 , 45 , seems especially promising taking into account the power scalability of our platform and excellent mutual coherence of the two combs.…”

Section: Discussionmentioning

confidence: 99%

Dual-comb thin-disk oscillator

Fritsch

Brons²,

Iandulskii³

et al. 2022

Nat Commun

View full text Add to dashboard Cite

Dual-comb spectroscopy (DCS) normally operates with two independent, relatively low power and actively synchronized laser sources. This hinders the wide adoption for practical implementations and frequency conversion into deep UV and VUV spectral ranges. Here, we report a fully passive, high power dual-comb laser based on thin-disk technology and its application to direct frequency comb spectroscopy. The peak power (1.2 MW) and the average power (15 W) of our Yb:YAG thin-disk dual-comb system are more than one-order-of-magnitude higher than in any previous systems. The scheme allows easy adjustment of the repetition frequency difference during operation. Both combs share all cavity components which leads to an excellent mutual stability. A time-domain signal recorded over 10 ms without any active stabilization was sufficient to resolve individual comb lines after Fourier transformation.

show abstract

Section: Discussionmentioning

confidence: 99%

Dual-comb thin-disk oscillator

Fritsch

Brons²,

Iandulskii³

et al. 2022

Nat Commun

View full text Add to dashboard Cite

show abstract

Section: Applicationsmentioning

confidence: 99%

“…TDL oscillators are promising sources for this purpose since their high peak power allows for efficient nonlinear conversion toward MIR or UV wavelengths, which are of high interest for many spectroscopy applications. [120,121] The first steps on this path were made in 2019 [66] by the demonstration of the highest average power dual-comb laser based on a KLM TDL oscillator. The dual-comb cavity was based on splitting both end mirrors while the rest of the cavity components remained shared.…”

Section: Dual-comb Oscillatorsmentioning

confidence: 99%

A Decade of Sub‐100‐fs Thin‐Disk Laser Oscillators

Drs

Fischer

Modsching

et al. 2023

Laser & Photonics Reviews

View full text Add to dashboard Cite

Thin‐disk lasers (TDLs) are best known for their high‐power continuous‐wave industrial applications. Nonetheless, the thin‐disk geometry is also highly attractive for ultrafast laser oscillators. The short propagation distance and large beam diameter inside the gain crystal allows for very low induced nonlinearity, low dispersion, and extreme peak powers inside the laser cavity. The path toward TDL oscillators directly delivering high average power at ultrafast pulse duration required for many scientific applications has, however, been tangled and is still ongoing. A decade ago, the first sub‐100‐fs laser oscillator is demonstrated, initiating the pursuit of even shorter pulses. Since then, many gain materials have been investigated in the thin‐disk geometry as well as various mode‐locking mechanisms for their suitability for efficient short‐pulse operation. In this review, the fast‐evolving development trends of TDL oscillators, as well as their scientific applications and prospects will be discussed.

show abstract

“…The two pulse-picking fiber-based amplifiers include acousto-optic modulators that reduce the seed repetition rates by a factor of eight, resulting in repetition rates of frep,I = 10 MHz and frep,II = 10 MHz + 0.75 Hz, respectively. Subsequently, the two-stage, chirped-pulse amplification setups enhance the average power of the pulse trains up to 19.3 W preserving the comb structure of the seeds 35 . With a pulse duration smaller than 250 fs (FWHM sech 2 -fit) of the amplified pulses, we can efficiently generate the third harmonic of the fundamental light.…”

Section: Chirped Pulse Amplification and Third Harmonic Generationmentioning

confidence: 99%

Broadband near-ultraviolet dual comb spectroscopy

Bernhardt

Fürst

Kirchner

et al. 2023

Preprint

View full text Add to dashboard Cite

The highly energetic photons of ultraviolet light drive electronic, vibrational and rotational transitions in virtually all atomic or molecular species. This radiation is thus a prime tool for strongly selective spectroscopic fingerprinting and real-time environmental monitoring if broad spectral coverage, short acquisition times and high spectral resolution can be achieved – requirements that are in mutual competition in traditional applications. As a novel concept with intrinsic potency in all three aspects, here we introduce ultraviolet dual comb spectroscopy using two broadband ultraviolet frequency combs centered at 871 THz (343 nm central wavelength) and covering a spectral bandwidth of 35.7 THz. We demonstrate the potential of the novel spectroscopy platform by acquiring fully state-resolved absorption spectra of formaldehyde, a prototype molecule with high relevance for laser spectroscopy and environmental sciences, with acquisition times as short as 100 µs and an averaged spectral resolution of 50 GHz and perform element-selective real-time tracking of gas concentration changes. To our knowledge, this is the first realization of dual comb spectroscopy in the ultraviolet spectral region and the first tool to allow for a real-time monitoring of the trinity of rotational, vibrational and electronic excitations in molecular species of major earth-atmospheric relevance.

show abstract

Ultraviolet dual comb spectroscopy: a roadmap

Cited by 19 publications

References 69 publications

Dual-comb thin-disk oscillator

Dual-comb thin-disk oscillator

A Decade of Sub‐100‐fs Thin‐Disk Laser Oscillators

Broadband near-ultraviolet dual comb spectroscopy

Contact Info

Product

Resources

About