Research Progress of Defects in Ti∶Sapphire Laser Crystals

Xiqi Feng; Xiaozhen Han

doi:10.3788/LOP57.230001

Journals >Laser & Optoelectronics Progress >Volume 57 >Issue 23 >Page 230001 > Article

Laser & Optoelectronics Progress
Vol. 57, Issue 23, 230001 (2020)

Research Progress of Defects in Ti∶Sapphire Laser Crystals | On the Cover

Xiqi Feng^1、* and Xiaozhen Han^2、*

Author Affiliations

¹Key Laboratory of Transparent and Opto-Functional Inorganic Materials, Chinese Academy of Sciences, Shanghai 200050, China

²Gem Materials Laboratory, Shanghai Jian Qiao University, Shanghai 201306, China

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DOI: 10.3788/LOP57.230001 Cite this Article Set citation alerts

Xiqi Feng, Xiaozhen Han. Research Progress of Defects in Ti∶Sapphire Laser Crystals[J]. Laser & Optoelectronics Progress, 2020, 57(23): 230001 Copy Citation Text

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Fig. 1. Schematic of Al-Ti-O ternary system^[23]

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Fig. 2. Formation energy of each defect in Ti∶sapphire versus chemical potential^[23]. (a) Substitutional defect; (b) interstitial Ti defect

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Fig. 3. Bonding energy in Ti∶Al₂O₃ crystal versus distance between defects^[33]

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Fig. 4. Schematic of formation of defect cluster or ion pair in α-Al₂O₃ crystal structure^[38]

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Fig. 5. Optical absorption spectra of UC3 in Ti∶sapphire sample^[20]. (a) Decomposed absorption spectra in near IR and visible region; (b) spectral decomposition at infrared region in Fig. 5(a)

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Fig. 6. Optical absorption spectra^[20]. (a) π-polarized optical absorption spectra of Ti∶sapphire crystals with different Ti concentrations; (b) normalized optical absorption spectra ( absorption coefficient at 490 nm is 1)

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Fig. 7. Optical absorption spectra^[20] . (a) π-polarized optical absorption spectra of Ti∶sapphire crystals with different Ti concentrations ( “E” band and Ti³⁺ band have been subtracted); (b) optical absorption spectra in log coordinate

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Fig. 8. Optical absorption spectra and decomposed results of highly Ti-doped sapphire crystal after reduced-anneal. Red line: optical absorption spectra of

T i_{Al}^{3 +}

; blue line: optical absorption spectra of

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Fig. 9. Emission spectra of Ti∶Al₂

{O_{3}}^{[44]}

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Fig. 10. Schematic of energy levels of

T i_{i}^{3 +}

and

T i_{Download full sizePump wavelength of LD /nm Pump power /W Output power /mW Pulse duration /fs Light-to-light conversion efficiency /% Tuning range /nm Ref. 445 1.2 3415 1.7 -- [10] 520 1.5 4506810 -- [11] 450 2.9 46065 7.9 -- [12] 450 3.5 433 and 382 62 and 54 6.6 and 5.9 37 and 120 [13]Table 1. Parameters for ultrafast LD pumped Ti∶sapphire laserAbsorption range Absorption wavelength Assignment Ref. UV 230 nm O 2- -Ti 4+ [54] 255 nm O 2- -Ti 4+ [43] 268 nm Ti 3+ -F [55] 268 nm Ti 3+ -F 2 [56] 300 nm O 2- [3Ti 4+ ∶ V_{Al}^{3 -}] [43] Visible and near infrared 550 nm and 485 nm Ti 3+ [43] 541 nm and 491 nm Ti 3+ [57] 800--850 nm Ti 3+ -Ti 4+ [21] About 750 nm Ti 3+ -Ti 4+ [43] Far infrared 264550 nm and 93458 nm Ti 3+ [58]Table 2. Optical absorption spectra and their assignments of Ti∶sapphire laser crystalsAbstract Get PDF(in Chinese) Figures&Tables (12) Equations (0) References (69) Cited By (3) Get Citation Copy Citation Text Xiqi Feng, Xiaozhen Han. Research Progress of Defects in Ti∶Sapphire Laser Crystals[J]. Laser & Optoelectronics Progress, 2020, 57(23): 230001 Download Citation EndNote(RIS) BibTex Plain Text Set citation alerts for the article Tools Share Set citation alerts for the article Save the article for my favorites Paper Information Category: Reviews Received: Jul. 14, 2020 Accepted: Aug. 27, 2020 Published Online:  Nov. 24, 2020 The Author Email: Feng Xiqi (xqfeng@sunm.shcnc.ac.cn), Han Xiaozhen (xqfeng@sunm.shcnc.ac.cn) DOI: 10.3788/LOP57.230001 Recommended Topics laser devices and laser physics Lasers and Laser Optics Laser physics laser manufacturing Instrumentation, Measurement and MetrologySet citation alerts for the article Please enter your email address Cancel ConfirmAbout CLP About Us Privacy Policy Products & Service Journals News Articles Conferences For Advertisers Share CLP Quick Link Chinese Laser Press CLP online library SIOM SPIE Cambridge University Press Optica Publishing Group OE SHOW COS © Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20 document.write(unescape("%3Cspan id='cnzz_stat_icon_1280142344'%3E%3C/span%3E%3Cscript src='https://v1.cnzz.com/z_stat.php%3Fid%3D1280142344%26show%3Dpic' type='text/javascript'%3E%3C/script%3E"));$(function () {
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