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# Upconversion pumping of a 2.3  µm Tm3+:KY3F10 laser with a 1064  nm ytterbium fiber laser.Opt Lett. 2020 Feb 15; 45(4):931-934.OL

Abstract

We report efficient lasing of the isotropic ${{\rm Tm}^{3 + }}\!:\!{{\rm KY}_3}{{\rm F}_{10}}$Tm3+:KY3F10 crystal near 2.3 µm via upconversion pumping with a 1064 nm ytterbium fiber laser as the pump source. When pumped at 1064 nm, an x-cavity ${{\rm Tm}^{3 + }}\!:\!{{\rm KY}_3}{{\rm F}_{10}}$Tm3+:KY3F10 laser operated at the free-running wavelength of 2344 nm. Lasing was obtained with output couplers having transmissions in the range of 1-3%, and as high as 124 mW of continuous-wave (cw) output power was generated with 604 mW of absorbed pump power by using the 3% output coupler. Broadly tunable cw lasing could be obtained in the 2268-2373 nm wavelength range. An analysis of the experimental power efficiency data shows that nearly all of the absorbed pump photons were converted to 2.3 µm laser output after accounting for the quantum defect of the laser transition and resonator losses. We expect that higher lasing efficiency should be possible by using longer crystals to increase the pump absorption.

### Authors

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Journal Article

eng

32058509

### Citation

Morova, Yagız, et al. "Upconversion Pumping of a 2.3  µm Tm3+:KY3F10 Laser With a 1064  nm Ytterbium Fiber Laser." Optics Letters, vol. 45, no. 4, 2020, pp. 931-934.
Morova Y, Tonelli M, Petrov V, et al. Upconversion pumping of a 2.3  µm Tm3+:KY3F10 laser with a 1064  nm ytterbium fiber laser. Opt Lett. 2020;45(4):931-934.
Morova, Y., Tonelli, M., Petrov, V., & Sennaroglu, A. (2020). Upconversion pumping of a 2.3  µm Tm3+:KY3F10 laser with a 1064  nm ytterbium fiber laser. Optics Letters, 45(4), 931-934. https://doi.org/10.1364/OL.384284
Morova Y, et al. Upconversion Pumping of a 2.3  µm Tm3+:KY3F10 Laser With a 1064  nm Ytterbium Fiber Laser. Opt Lett. 2020 Feb 15;45(4):931-934. PubMed PMID: 32058509.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Upconversion pumping of a 2.3  µm Tm3+:KY3F10 laser with a 1064  nm ytterbium fiber laser. AU - Morova,Yagız, AU - Tonelli,Mauro, AU - Petrov,Valentin, AU - Sennaroglu,Alphan, PY - 2020/2/15/entrez PY - 2020/2/15/pubmed PY - 2020/2/15/medline SP - 931 EP - 934 JF - Optics letters JO - Opt Lett VL - 45 IS - 4 N2 - We report efficient lasing of the isotropic ${{\rm Tm}^{3 + }}\!:\!{{\rm KY}_3}{{\rm F}_{10}}$Tm3+:KY3F10 crystal near 2.3 µm via upconversion pumping with a 1064 nm ytterbium fiber laser as the pump source. When pumped at 1064 nm, an x-cavity ${{\rm Tm}^{3 + }}\!:\!{{\rm KY}_3}{{\rm F}_{10}}$Tm3+:KY3F10 laser operated at the free-running wavelength of 2344 nm. Lasing was obtained with output couplers having transmissions in the range of 1-3%, and as high as 124 mW of continuous-wave (cw) output power was generated with 604 mW of absorbed pump power by using the 3% output coupler. Broadly tunable cw lasing could be obtained in the 2268-2373 nm wavelength range. An analysis of the experimental power efficiency data shows that nearly all of the absorbed pump photons were converted to 2.3 µm laser output after accounting for the quantum defect of the laser transition and resonator losses. We expect that higher lasing efficiency should be possible by using longer crystals to increase the pump absorption. SN - 1539-4794 UR - https://www.unboundmedicine.com/medline/citation/32058509/Upconversion_pumping_of_a_2_3  µm_Tm3+:KY3F10_laser_with_a_1064  nm_ytterbium_fiber_laser_ DB - PRIME DP - Unbound Medicine ER -
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