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Spectroscopy and laser gain measurements of CaF2: Nd, X3+, Z3+ (X, Z = Gd, La, Ce, Y, Lu, Sc) crystals for broadband lasers applications.

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Title: Spectroscopy and laser gain measurements of CaF2: Nd, X3+, Z3+ (X, Z = Gd, La, Ce, Y, Lu, Sc) crystals for broadband lasers applications.
Authors: Meroni, C.1 (AUTHOR) cesare.meroni@ensicaen.fr, Braud, A.1 (AUTHOR), Doualan, J.L.1 (AUTHOR), Maunier, C.2 (AUTHOR), Montant, S.2 (AUTHOR), Camy, P.1 (AUTHOR)
Source: Journal of Luminescence. Dec2022, Vol. 252, pN.PAG-N.PAG. 1p.
Subjects: Solid-state lasers, Laser measurement, Laser spectroscopy, Thulium, Rare earth metals, Fiber lasers
Abstract: An efficient approach to avoid Nd3+ clustering in CaF 2 :Nd3+ is the co-doping with non-optically active buffer (Bu) ions creating Nd-Bu emitting clusters for laser applications around 1050 nm (4F 3/2 → 4I 11/2) taking advantage of their unique large absorption and emission bands. A detailed spectroscopic investigation of buffer codoping with Gd3+, La3+, Ce3+, Y3+, Lu3+ and Sc3+ ions is presented. The codoping with large buffer ions compared to Nd3+ like Gd3+, La3+, Ce3+ leads to one type of dominant Nd-Bu cluster, while the codoping with smaller ions like Y3+, Lu3+ and Sc3+ involves the formation of two types of Nd-Bu clusters, which can be discriminated in absorption/excitation/luminescence spectra and which further exhibit two different lifetimes. The laser gain performance of these codoped crystals with one or two buffer ions is investigated using a dedicated double modulation pump-probe setup allowing the tuning of both pump and probe wavelengths. As an example, a laser gain of 35% is measured in a 5 mm long CaF 2 : 0.5%Nd, 5%Lu crystal at 1054 nm for 400 mW of absorbed pump power at 797 nm. This direct measurement of the laser gain is particularly interesting for crystals codoped with small buffer ions where the presence of two Nd emitting centers complicates the calculation of the laser gain. For large buffer ions, a direct calculation of the laser gain is shown to be in good agreement with the experimental gain values. • Detailed spectroscopic analysis of CaF 2 :Nd codoped with one or two buffer ions. • Demonstration of one dominant Nd3+ center with large buffer ions and two dominant Nd3+ centers with small buffer ions. • Tuning of the emission spectral profile as well as the 4F 3/2 lifetime by carefully choosing the right combination of buffer ions and excitation wavelength. • Laser gain in CaF 2 :Nd codoped using a dedicated double-modulation pump-probe setup with tunable pump and probe sources. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Luminescence is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Spectroscopy and laser gain measurements of CaF2: Nd, X3+, Z3+ (X, Z = Gd, La, Ce, Y, Lu, Sc) crystals for broadband lasers applications.
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  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Meroni%2C+C%2E%22">Meroni, C.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> cesare.meroni@ensicaen.fr</i><br /><searchLink fieldCode="AR" term="%22Braud%2C+A%2E%22">Braud, A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Doualan%2C+J%2EL%2E%22">Doualan, J.L.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Maunier%2C+C%2E%22">Maunier, C.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Montant%2C+S%2E%22">Montant, S.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Camy%2C+P%2E%22">Camy, P.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Luminescence%22">Journal of Luminescence</searchLink>. Dec2022, Vol. 252, pN.PAG-N.PAG. 1p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Solid-state+lasers%22">Solid-state lasers</searchLink><br /><searchLink fieldCode="DE" term="%22Laser+measurement%22">Laser measurement</searchLink><br /><searchLink fieldCode="DE" term="%22Laser+spectroscopy%22">Laser spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Thulium%22">Thulium</searchLink><br /><searchLink fieldCode="DE" term="%22Rare+earth+metals%22">Rare earth metals</searchLink><br /><searchLink fieldCode="DE" term="%22Fiber+lasers%22">Fiber lasers</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: An efficient approach to avoid Nd3+ clustering in CaF 2 :Nd3+ is the co-doping with non-optically active buffer (Bu) ions creating Nd-Bu emitting clusters for laser applications around 1050 nm (4F 3/2 → 4I 11/2) taking advantage of their unique large absorption and emission bands. A detailed spectroscopic investigation of buffer codoping with Gd3+, La3+, Ce3+, Y3+, Lu3+ and Sc3+ ions is presented. The codoping with large buffer ions compared to Nd3+ like Gd3+, La3+, Ce3+ leads to one type of dominant Nd-Bu cluster, while the codoping with smaller ions like Y3+, Lu3+ and Sc3+ involves the formation of two types of Nd-Bu clusters, which can be discriminated in absorption/excitation/luminescence spectra and which further exhibit two different lifetimes. The laser gain performance of these codoped crystals with one or two buffer ions is investigated using a dedicated double modulation pump-probe setup allowing the tuning of both pump and probe wavelengths. As an example, a laser gain of 35% is measured in a 5 mm long CaF 2 : 0.5%Nd, 5%Lu crystal at 1054 nm for 400 mW of absorbed pump power at 797 nm. This direct measurement of the laser gain is particularly interesting for crystals codoped with small buffer ions where the presence of two Nd emitting centers complicates the calculation of the laser gain. For large buffer ions, a direct calculation of the laser gain is shown to be in good agreement with the experimental gain values. • Detailed spectroscopic analysis of CaF 2 :Nd codoped with one or two buffer ions. • Demonstration of one dominant Nd3+ center with large buffer ions and two dominant Nd3+ centers with small buffer ions. • Tuning of the emission spectral profile as well as the 4F 3/2 lifetime by carefully choosing the right combination of buffer ions and excitation wavelength. • Laser gain in CaF 2 :Nd codoped using a dedicated double-modulation pump-probe setup with tunable pump and probe sources. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Luminescence is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.jlumin.2022.119336
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Solid-state lasers
        Type: general
      – SubjectFull: Laser measurement
        Type: general
      – SubjectFull: Laser spectroscopy
        Type: general
      – SubjectFull: Thulium
        Type: general
      – SubjectFull: Rare earth metals
        Type: general
      – SubjectFull: Fiber lasers
        Type: general
    Titles:
      – TitleFull: Spectroscopy and laser gain measurements of CaF2: Nd, X3+, Z3+ (X, Z = Gd, La, Ce, Y, Lu, Sc) crystals for broadband lasers applications.
        Type: main
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          Name:
            NameFull: Meroni, C.
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            NameFull: Braud, A.
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            NameFull: Doualan, J.L.
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            NameFull: Maunier, C.
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            NameFull: Montant, S.
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            NameFull: Camy, P.
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          Dates:
            – D: 01
              M: 12
              Text: Dec2022
              Type: published
              Y: 2022
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              Value: 00222313
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            – Type: volume
              Value: 252
          Titles:
            – TitleFull: Journal of Luminescence
              Type: main
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