7kW direct-liquid-cooled side-pumped Nd:YAG multi-disk laser resonator

Wang, Ke; Tang, Bo; Jia, Chunyan; Shang, Jianli; An, Xiangchao; Liao, Yongli; Xu, Zhi; Guo, Jingwei; Jiang, Yi; Yu, Yi; Su, Hua; Gao, Qingsong; Wang, Xiaojun; Liu, Wanfa; Zhang, Kai

doi:10.1364/oe.24.015012

Cited by 18 publications

(3 citation statements)

References 14 publications

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“…The four other faces can be supposed to be adiabatic considering the very small heat transfer coefficient between the four faces of the slab and air. So the thermal boundary condition at the two cooled surfaces is defined as [26][27][28] ∂u(x, y, z) ∂y…”

Section: Resultsmentioning

confidence: 99%

Three-wavelength green generation in Nd:GdCOB slab crystal based on self-frequency conversion

Song

Shen

et al. 2019

Laser Phys. Lett.

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We report on a multi-self-frequency conversion in one Nd3+-doped GdCa4O(BO3)3 (Nd:GdCOB) slab crystal, including self-sum-frequency (SSF) at 538 nm and self-frequency doubling (SFD) at 530 and 545 nm from two fundamental infrared wavelengths at 1060 and 1091 nm for the first time. The total output power of the three green lasers was up to 1.7 W with a 0.9 W SSF output at 538 nm. To our knowledge, this is the highest total green output power and the highest SSF power at 538 nm via the multi-self-frequency conversion process in SFD crystal. Moreover, a theoretical simulation of the temperature distribution in the slab by considering the pump power induced thermal effect was implemented, leading a deep insight into the physical mechanism of multi-wavelength generation.

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Section: Resultsmentioning

confidence: 99%

Three-wavelength green generation in Nd:GdCOB slab crystal based on self-frequency conversion

Song

Shen

et al. 2019

Laser Phys. Lett.

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“…More advanced applications triggered by such a PPCP laser are still on the way in many scientific fields. Our PPCP laser platform is ready for applications in many scenarios such as high-temperature tolerant laser equipment 42 , quantum nanophotonic 43,44 , entangled phonons generation 45 , and laser diagnosis with new wavelengths 15 .…”

Section: Discussionmentioning

confidence: 99%

Photon-phonon collaboratively pumped laser

Chen

Liang

et al. 2023

Preprint

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In 1916, Einstein considered stimulated photon emission of electron radiation, offering the theoretical foundation for laser1, technically achieved in 19602. To date, the laser has been emerging as cutting-edge modern technology from fundamental research to daily life3-8. However, the byproduct thermal phonons, along with heat creation of ineluctable non-radiative transition, is ineffective, even playing a detrimental role in lasing process. Despite the powerful ability of phonons, e.g., Raman process9,10 or Cooper pairs in superconductors11,12, it seems impractical to use random thermal phonons to help a highly coherent laser generation far beyond the inherent fluorescence spectra. Here, we realize a photon-phonon collaboratively pumped laser enhanced by heat in a counterintuitive way. We observe a clear laser transition from phonon-free 1064 nm lasing to phonon-pumped 1176 nm lasing in Nd:YVO4 crystals, associated with the phonon-pumped electron population inversion under gradually increasing temperature. Moreover, an additional temperature threshold (Tth) appears as the trigger besides ordinary photon pump power threshold (Pth). A two-dimensional lasing phase diagram of parameter space is revealed and experimentally verified with a general threshold curve ruled by Pth = C/Tth (constant C upon loss for a given crystal), similar to Curie’s Law13. We anticipate our strategy will promote the study of laser physics via dimension extending, searching for ultrahigh-efficiency and low-threshold yet tunable and compact laser devices via this new temperature degree of freedom.

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“…Here D2O is used instead of H2O because of the absorption at 1064 nm of H2O, but it should not be needed at 800 nm. A similar cooling scheme was adopted by Wang et al [24] for a 7 kW Nd:YAG laser system. Also in this case the gain medium is split in several slabs, face cooled by a high speed D2O flow crossed by the laser beam.…”

Section: Thermal Managementmentioning

confidence: 99%

A viable laser driver for a user plasma accelerator

Gizzi

Koester

Labate

et al. 2018

Nuclear Instruments and Methods in Physics Research Section A:

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The construction of a novel user facility employing laser-driven plasma acceleration with superior beam quality will require an industrial grade, high repetition rate petawatt laser driver which is beyond existing technology. However, with the ongoing fast development of chirped pulse amplification and high average power laser technology, options can be identified depending on the envisioned laser-plasma acceleration scheme and on the time scale for construction. Here we discuss laser requirements for the EuPRAXIA infrastructure design and identify a suitable laser concepts that is likely to fulfil such requirements with a moderate development of existing technologies.

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7kW direct-liquid-cooled side-pumped Nd:YAG multi-disk laser resonator

Cited by 18 publications

References 14 publications

Three-wavelength green generation in Nd:GdCOB slab crystal based on self-frequency conversion

Three-wavelength green generation in Nd:GdCOB slab crystal based on self-frequency conversion

Photon-phonon collaboratively pumped laser

A viable laser driver for a user plasma accelerator

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