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Cryogenically cooled Holmium-doped Lithium Yttrium Fluoride (Ho:YLF) laser crystals are elite gain media for producing high-energy (
),
laser pulses. By cooling to liquid nitrogen temperatures (~77 K), the system transforms from a quasi-three-level to a quasi-four-level laser, significantly increasing emission cross-sections, lowering thresholds, and minimizing thermal effects. These crystals excel in Q-switched operation, delivering high peak powers suited for LIDAR and material processing.
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Web results
High-pulse-energy cryogenic Ho:YLF laser crystals
HG Optronics.,INC.
https://www.hgoptronics.com › high-pulse-energy-cryo...
HG Optronics.,INC.
https://www.hgoptronics.com › high-pulse-energy-cryo...
Ho:YLF is a very attractive laser material, because the lifetime of the upper laser level is much longer ( ~ 14 ms) than in Ho:YAG and the emission cross ...Read more
Scholarly articles for High-pulse-energy cryogenic Ho:YLF laser crystals | |
… mJ cryogenic Ho: YLF laser with unstable resonator - Fonnum - Cited by 6 Cryogenically cooled, Ho: YAG, Q-switched laser - Ganija - Cited by 15 | |
Web results
2-μm wavelength, high-energy Ho:YLF chirped-pulse amplifier ...
Optica Publishing Group
https://opg.optica.org › abstract
Optica Publishing Group
https://opg.optica.org › abstract
by M Hemmer2015Cited by 122 — A 2-μm wavelength laser delivering up to 39-mJ energy, ∼ 10 ps duration pulses at 100-Hz repetition rate is reported. The system relies on chirped pulse ...Read more
Cryogenically Operated High-power Thin-disk Laser ...
Chinese Academy of Sciences
https://english.cas.cn › newsroom › research_news › phys
Chinese Academy of Sciences
https://english.cas.cn › newsroom › research_news › phys
May 19, 2025 — In this study, researchers changed the lasing process of the Ho: YLF crystal from a quasi-three-level to a quasi-four-level system by cooling it ...Read more
A high-energy Ho: YLF MOPA system pumped by Tm
ScienceDirect.com
https://www.sciencedirect.com › article › abs › pii
ScienceDirect.com
https://www.sciencedirect.com › article › abs › pii
by H Wang2024Cited by 18 — As a result, Ho: YLF crystals are primarily employed as the gain medium for achieving high-energy lasers in the 2-μm range. Furthermore, as the Ho: YLF crystals ...Read more
Highly Efficient Cryogenically Cooled Ho: YLF Oscillator
IEEE
https://ieeexplore.ieee.org › document
IEEE
https://ieeexplore.ieee.org › document
by M Ganija2025 — Ho:YAg cryo laser with high average power scaling, exellent slope efficincy ~70 % and pulse energy operation have been successfully demonstrated [2]–[3].Read more
Ho:YLF Laser Crystal Manufacturer
Laser Crylink
https://www.laser-crylink.com › ... › Laser Crystal
Laser Crylink
https://www.laser-crylink.com › ... › Laser Crystal
The tunable mid-infrared light source can be realized by using Ho: YLF and other laser crystals as gain medium with a wavelength of 2000nm.Read more
High energy directly pumped Ho:YLF laser
NASA (.gov)
https://ntrs.nasa.gov › api › citations › downloads
NASA (.gov)
https://ntrs.nasa.gov › api › citations › downloads
PDF
by M Petros2000Cited by 16 — Using a co-doped Ho:Tm:YLF crystal, NASA Langley researchers have demonstrated up to. 600 mJ of 2 µm energy [1]. Although this laser produced high energy, ...Read more
160 mJ cryogenic Ho:YLF laser with unstable resonator
Optica Publishing Group
https://opg.optica.org › ViewMedia
Optica Publishing Group
https://opg.optica.org › ViewMedia
When high pulse energy is of interest, as in our work, the Ho:YLF system prevails because it has an upper state life time of 14.3 ms compared to. 9.8 ms in Ho: ...Read more
High-pulse-energy cryogenic Ho:YLF laser pumped by a ...
Semantic Scholar
https://www.semanticscholar.org › paper › High-pulse-e...
Semantic Scholar
https://www.semanticscholar.org › paper › High-pulse-e...
High-energy 2-μm holmium lasers have a range of important applications including LIDARS for remote sensing and atmospheric science. In addition, such lasers ...
People also ask
What is the pulse energy of a laser?
Pulsed laser: Pulse energy (J) = Average power (W) / repetition rate (Hz) There are 3 parameters in this equation. To measure the average power, you could use a laser power meter. For the two other parameters, you can use an energy meter. It will measure both the energy per pulse and the repetition rate.Jul 12, 2023
How to calculate laser pulse energy - Gentec-EO
Gentec-EO
https://www.gentec-eo.com › blog › laser-pulse-energy-c...
Gentec-EO
https://www.gentec-eo.com › blog › laser-pulse-energy-c...
What are laser crystals used for?
Laser crystals are optical crystals — typically single crystals (monocrystalline optical materials) — which are used as gain media for solid-state lasers. In most cases, they are doped with either trivalent rare earth ions or transition metal ions.
Laser Crystals - RP Photonics
RP Photonics
https://www.rp-photonics.com › laser_crystals
RP Photonics
https://www.rp-photonics.com › laser_crystals
What is ND YLF laser?
Several variants of the diode-pumped solid state laser have been developed, and of these, the Nd:YLF (neodymium: yttrium lithium fluoride) laser produces the highest pulse energy and average power in the repetition rate ranging from a single pulse up to approximately 6 kHz.
Nd:YLF Mode-Locked Pulsed Lasers - Evident Scientific
Evident Scientific
https://evidentscientific.com › tutorials › lasers › ndylf
Evident Scientific
https://evidentscientific.com › tutorials › lasers › ndylf
Web results
Highly efficient high power CW and Q-switched Ho:YLF laser
Deutsche Nationalbibliothek
https://d-nb.info › ...
Deutsche Nationalbibliothek
https://d-nb.info › ...
PDF
by J KWIATKOWSKICited by 16 — The maximum average output power of 34.1 W at the PRF of 10 kHz was obtained for a 50 mm holmium crystal length. For 2 kHz PRF and 71.9 W of incident pump power ...Read more