Kerr-lens mode-locked thin-disk oscillator with 50% output coupling rate

Poetzlberger, Markus; Zhang, Jinwei; Gröbmeyer, Sebastian; Bauer, Dominik; Sutter, Dirk; Brons, Jonathan; Pronin, Oleg

doi:10.1364/ol.44.004227

Cited by 18 publications

(20 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1. The driving laser is a high-power Kerr-lens mode-locked thindisk Yb:YAG oscillator emitting 136 W average power at 10.6 MHz with 12.8 μJ pulse energy and a pulse duration of 300 fs resulting in 38 MW peak power [18]. The oscillator output is mode matched to a Herriott-type MPC by a beam expander.…”

Section: Experimental Setup and Resultsmentioning

confidence: 99%

Self-compression at 1 µm wavelength in all-bulk multi-pass geometry

et al. 2020

Self Cite

View full text Add to dashboard Cite

We present directly oscillator-driven self-compression inside an all-bulk Herriott-type multi-pass cell in the near-infrared spectral range. By utilizing precise dispersion management of the multi-pass cell mirrors, we achieve pulse compression from 300 fs down to 31 fs at 11 µJ pulse energy and 119 W average power with a total efficiency exceeding 85%. This corresponds to an increase in peak power by more than a factor of three and a temporal compression by almost a factor of ten in a single broadening stage without necessitating subsequent dispersive optics for temporal compression. The concept is scalable towards millijoule pulse energies and can be implemented in visible, near-infrared and infrared spectral ranges. Importantly, it paves a way towards exploiting Raman soliton self-frequency shifting, supercontinuum generation and other highly nonlinear effects at unprecedented high peak power and pulse energy levels.

show abstract

Section: Experimental Setup and Resultsmentioning

confidence: 99%

Self-compression at 1 µm wavelength in all-bulk multi-pass geometry

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…A roadmap for further power scaling of this laser architecture beyond 500-W output power consists in designing an active multi-pass cell encompassing five rather than three reflections on the disk and hence increasing the output coupling rate to 40% from the current 25%. Thin-disk oscillators based on the Yb:YAG gain material and operating with even larger output-coupling rates have already been demonstrated [19,24,27]. For this purpose, 2"-diameter mirrors inside the multi-pass cell can be used to accommodate the multiple reflections.…”

Section: Discussionmentioning

confidence: 99%

“…Both results have been achieved in an air environment and delivered shorter pulses at higher repetition rate compared to the presented high-power SESAM-modelocked Yb:YAG thin-disk oscillators [19][20][21]. Recently, a KLM Yb:YAG thin-disk oscillator designed with an active multi-pass configuration and delivering 140-W average power at 13-µJ pulse energy has been demonstrated [24].…”

Section: Introductionmentioning

confidence: 88%

“…In order to mitigate these thermal effects, a compelling approach is to reduce the intracavity power by designing an imaging scheme in the laser cavity encompassing multiple reflections on the disk gain medium and, hence, allowing a larger output coupling rate [19,24,27]. However, such an imaging scheme further increases the sensitivity to the disk's thermal lensing.…”

Section: Cavity Designmentioning

confidence: 99%

“…For example, without laser operation we have observed damage when operating at 5.4-kW/cm 2 pump intensity and 8-mm-diameter pump spot on an Yb:YAG thin disk. In the discussed ultrafast TDL oscillators [16][17][18][19][20][21][22][23][24], the pump spot was at most 4.7-mm in diameter, which limits the pump power to ≈1 kW when keeping within a safe intensity regime. However, scaling the beam size on the disk and on other optical components comes at the cost of an increased sensitivity to the thermal lensing of those components [25].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Power scaling of ultrafast oscillators: 350-W average-power sub-picosecond thin-disk laser

et al. 2019

View full text Add to dashboard Cite

We report a semiconductor saturable absorber mirror (SESAM)-modelocked thin-disk laser oscillator delivering a record 350-W average output power with 940-fs, 39-µJ pulses at 8.88-MHz repetition rate and 37-MW peak power. This oscillator is based on the Yb:YAG gain material and has a large pump spot on the disk. The cavity design includes an imaging scheme, which results in multiple reflections on the disk gain medium to enable a larger output coupling rate compared to those used in thin-disk oscillators with a single reflection on the disk. This reduces the intracavity power for a given output power, thus decreasing the stress on the intracavity components. We operate the laser in a low-pressure environment in order to limit the disk's thermal lensing and drastically reduce the nonlinearity picked up in the intracavity air medium. The combination of the imaging scheme and low-pressure operation paves the way to further power scaling of ultrafast thin-disk oscillators toward the kW milestone.

show abstract

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

Kerr-lens mode-locked thin-disk oscillator with 50% output coupling rate

Cited by 18 publications

References 22 publications

Self-compression at 1 µm wavelength in all-bulk multi-pass geometry

Self-compression at 1 µm wavelength in all-bulk multi-pass geometry

Power scaling of ultrafast oscillators: 350-W average-power sub-picosecond thin-disk laser

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

Contact Info

Product

Resources

About