[1] Wilson B C, Patterson M S. The physics of photodynamic therapy[J]. Physics in Medicine and Biology, 31, 327-360(1986).

[2] Yang K, Ren Q S, Wei S G et al. Application of 2 μm Tm laser on biomedicine[J]. Laser & Optronics Progress, 42, 52-56(2005).

[3] Li Q, He B Y. Analysis of laser damage to human eyes[C], 98-104(2013).

[4] Hu Y X. Development of mid-infrared medical fiber laser and its interaction with biological tissues[D](2017).

[5] Blackmon R L, Irby P B, Fried N M. Holmium: YAG (λ=2, 120 nm) versus thulium fiber (λ=1, 908 nm) laser lithotripsy[J]. Lasers in Surgery and Medicine, 42, 232-236(2010).

[6] Dray X, Donatelli G, Krishnamurty D M et al. A 2-µm continuous-wave laser system for safe and high-precision dissection during NOTES procedures[J]. Digestive Diseases and Sciences, 55, 2463-2470(2010).

[7] Pierce M C, Jackson S D, Dickinson M R et al. Laser-tissue interaction with a high-power 2-microm fiber laser: preliminary studies with soft tissue[J]. Lasers in Surgery and Medicine, 25, 407-413(1999).

[8] Liu Y Z, Xing Y B, Xu Z W et al. Research progress in high power Tm3+-doped silica fiber lasers[J]. Laser & Optoelectronics Progress, 55, 050004(2018).

[9] Yan S. High quantum efficiency gain-switch thulium-doped fiber lasers[D](2016).

[10] Niemz M H[M]. Laser-tissue interactions(2002).

[11] Alagha H Z, Gülsoy M. Photothermal ablation of liver tissue with 1940-nm thulium fiber laser: an ex vivo study on lamb liver[J]. Journal of Biomedical Optics, 21, 015007(2016).

[12] Chan K F, Joshua Pfefer T, Teichman J M H et al. A perspective on laser lithotripsy: the fragmentation processes[J]. Journal of Endourology, 15, 257-273(2001).

[13] Schofield P F, Knight K S, van der Houwen J A M et al. The role of hydrogen bonding in the thermal expansion and dehydration of brushite, di-calcium phosphate dihydrate[J]. Physics and Chemistry of Minerals, 31, 606-624(2004).

[14] Fried N M. Recent advances in infrared laser lithotripsy [Invited[J]. Biomedical Optics Express, 9, 4552-4568(2018).

[15] Ehrenreich T, Leveille R, Majid I et al. 1 kW, all-glass Tm: fiber laser[J]. Proceeding of SPIE, 7580, 758016(2010).

[16] Wang X, Jin X X, Zhou P et al. All-fiber high-average power nanosecond-pulsed master-oscillator power amplifier at 2  μm with mJ-level pulse energy[J]. Applied Optics, 55, 1941-1945(2016).

[17] Gaida C, Gebhardt M, Heuermann T et al. Ultrafast thulium fiber laser system emitting more than 1 kW of average power[J]. Optics Letters, 43, 5853-5856(2018).

[18] Liu Y Z, Xing Y B, Liao L et al. 530 W all-fiber continuous-wave Tm-doped fiber laser[J]. Acta Physica Sinica, 69, 184209(2020).

[19] Xia S J, Zhang Y N, Lu J et al. Thulium laser resection of prostate-tangerine technique in treatment of benign prostate hyperplasia[J]. National Medical Journal of China, 85, 3225-3228(2005).

[20] Ludwig H C, Kruschat T, Knobloch T et al. First experiences with a 2.0-μm near infrared laser system for neuroendoscopy[J]. Neurosurgical Review, 30, 195-201(2007).

[21] Bilici T, Tabakoglu O, Kalaycioglu H et al. Modulated and continuous-wave operations of thulium (Tm∶YAP) laser in tissue welding[C], 1-2(2009).

[22] Traxer O, Rapoport L, Tsarichenko D et al. V03-02 first clinical study on superpulse thulium fiber laser for lithotripsy[J]. Journal of Urology, 199, e321-e322(2018).

[23] Sroka R, Pongratz T, Esipova A et al. Endovenous laser therapy for occlusion of incompetent saphenous veins using 1940 nm[J]. Proceedings of SPIE, 9542, 95420D(2015).

[24] Zeitels S M, Burns J A, Akst L M et al. Office-based and microlaryngeal applications of a fiber-based thulium laser[J]. The Annals of Otology, Rhinology, and Laryngology, 115, 891-896(2006).

[25] Pothen A J, Evenboer J, Swartz J E et al. Use of the 2-μm continuous wave thulium laser for the resection of oral squamous cell carcinomas does not impair pathological assessment[J]. Lasers in Surgery and Medicine, 46, 608-613(2014).

[26] Theisen D, Ott V, Bernd H W et al. CW high-power IR laser at 2 µm for minimally invasive surgery[J]. Proceedings of SPIE, 5142, 96-100(2003).

[27] El-Sherif A F, King T A. Soft and hard tissue ablation with short-pulse high peak power and continuous thulium-silica fibre lasers[J]. Lasers in Medical Science, 18, 139-147(2003).

[28] Burns J A, Kobler J B, Heaton J T et al. Thermal damage during thulium laser dissection of laryngeal soft tissue is reduced with air cooling: ex vivo calf model study[J]. The Annals of Otology, Rhinology, and Laryngology, 116, 853-857(2007).

[29] Blackmon R L, Fried N M, Irby P B. Comparison of holmium: YAG and thulium fiber laser lithotripsy: ablation thresholds, ablation rates, and retropulsion effects[J]. Journal of Biomedical Optics, 16, 071403(2011).

[30] Bilici T, Mutlu S, Kalaycioglu H et al. Development of a thulium (Tm∶YAP) laser system for brain tissue ablation[J]. Lasers in Medical Science, 26, 699-706(2011).

[31] Hardy L A, Kennedy J D, Wilson C R et al. Analysis of thulium fiber laser induced bubble dynamics for ablation of kidney stones[J]. Journal of Biophotonics, 10, 1240-1249(2017).

[32] Lü T, Zhang W, Chen F. Experimental research of dissecting biological soft tissues induced by fiber-guided Q-switched thulium: YAG laser microsurgical scalpel[J]. Acta Optica Sinica, 34, 1117001(2014).

[33] Belyaev A N, Chabushkin A N, Khrushchalina S A et al. Investigation of endovenous laser ablation of varicose veins in vitro using 1.885-μm laser radiation[J]. Lasers in Medical Science, 31, 503-510(2016).

[34] Pal D, Ghosh A, Sen R et al. Continuous-wave and quasi-continuous wave thulium-doped all-fiber laser: implementation on kidney stone fragmentations[J]. Applied Optics, 55, 6151-6155(2016).

[35] Huang Y Z, Jivraj J, Zhou J Q et al. Pulsed and CW adjustable 1942 nm single-mode all-fiber Tm-doped fiber laser system for surgical laser soft tissue ablation applications[J]. Optics Express, 24, 16674-16686(2016).

[36] de Boorder T, Brouwers H B, Noordmans H J et al. Thulium laser-assisted endoscopic third ventriculostomy: determining safe laser settings using in vitro model and 2 year follow-up results in 106 patients[J]. Lasers in Surgery and Medicine, 50, 629-635(2018).

[37] Stock K, Hausladen F, Stegmayer T et al. High efficient bone ablation with diode pumped Erbium and Thulium lasers including different delivery fibers: a comparative in vitro study[J]. Proceedings of SPIE, 10488, 104880U(2018).

[38] Yang D K, Wang J, Jiao X et al. Research on biological effects of domestic 1.94 μm thulium laser on canine prostate tissue[J]. Journal of Clinical Urology, 33, 904-908(2018).

[39] Artemov S A, Belyaev A N, Bushukina O S et al. Optimization of endovenous laser coagulation: in vivo experiments[J]. Lasers in Medical Science, 35, 867-875(2020).

[40] Ashpitel H F, Dabbs E B, Nemchand J L et al. Histological and immunofluorescent analysis of a large tributary of the great saphenous vein treated with a 1920 nm endovenous laser: preliminary findings[J]. EJVES Short Reports, 39, 7-11(2018).

[41] Hardy L A, Vinnichenko V, Fried N M. High power holmium: YAG versus thulium fiber laser treatment of kidney stones in dusting mode: ablation rate and fragment size studies[J]. Lasers in Surgery and Medicine, 51, 522-530(2019).

[42] Tunc B, Gulsoy M. Stereotaxic laser brain surgery with 1940-nm Tm: fiber laser: an in vivo study[J]. Lasers in Surgery and Medicine, 51, 643-652(2019).

[43] Arkhipova V, Enikeev M, Laukhtina E et al. Ex vivo and animal study of the blue diode laser, Tm fiber laser, and their combination for laparoscopic partial nephrectomy[J]. Lasers in Surgery and Medicine, 52, 437-448(2020).

[44] Tunc B, Gulsoy M. The comparison of thermal effects of a 1940-nm Tm: fiber laser and 980-nm diode laser on cortical tissue: stereotaxic laser brain surgery[J]. Lasers in Surgery and Medicine, 52, 235-246(2020).

[45] Szlauer R, Götschl R, Razmaria A et al. Endoscopic vaporesection of the prostate using the continuous-wave 2-μm thulium laser: outcome and demonstration of the surgical technique[J]. European Urology, 55, 368-375(2009).

[46] Wang Z F, Xu X L, Liu Z X et al. Comparative observation of the effects of 2 μm laser vaporization and PKRP on prostate tissue[J]. Shandong Medical Journal, 51, 66-67(2011).

[47] Ebner F H, Nagel C, Tatagiba M et al. Efficacy and versatility of the 2-micron continuous wave laser in neuroendoscopic procedures[M]. Hydrocephalus, 113, 143-147(2012).

[48] van Abel K M, Moore E J, Carlson M L et al. Transoral robotic surgery using the thulium: YAG laser: a prospective study[J]. Archives of Otolaryngology-Head & Neck Surgery, 138, 158-166(2012).

[49] Marulli G, Droghetti A, Chiara F et al. A prospective randomized trial comparing stapler and laser techniques for interlobar fissure completion during pulmonary lobectomy[J]. Lasers in Medical Science, 28, 505-511(2013).

[50] Passacantilli E, Anichini G, Lapadula G et al. Assessment of the utility of the 2-µm thulium laser in surgical removal of intracranial meningiomas[J]. Lasers in Surgery and Medicine, 45, 148-154(2013).

[51] Li D, Miao X L, Wang J W et al. Analysis of the efficacy and safety of 1.9 μm thulium laser in the treatment of benign prostatic hyperplasia[J]. Practical Geriatrics, 30, 610-611(2016).

[52] Viarengo L M A, Viarengo G, Martins A M et al. Medium and long-term outcomes of endovenous treatment of varicose veins with a 1940 nm diode laser: critical analysis and technical considerations[J]. Jornal Vascular Brasileiro, 16, 23-30(2017).

[53] Schmedt C G, Esipova A, Dikic S et al. Endovenous laser therapy (ELT) of saphenous vein reflux using thulium laser (Tm, 1940 nm) with radial fiber-one year results[J]. European Journal of Vascular and Endovascular Surgery, 52, 413-414(2016).

[54] Tao W, Sun C Y, Xue B X et al. The efficacy and safety of 2-μm continuous laser in the treatment of high-risk patients with benign prostatic hyperplasia[J]. Lasers in Medical Science, 32, 351-356(2017).

[55] Zhang P, Wang Y H, Zhang X G et al. Application comparison of 2 μm laser and cold knife in partial nephrectomy[J]. Hebei Medical Journal, 39, 1697-1699(2017).

[56] Wu Y Y, Fan H Q, Zhang W P et al. Application of 2 μm laser in the treatment of patients with low-volume prostatic hyperplasia that maintain anticoagulation[J]. Fujian Medical Journal, 40, 64-66(2018).

[57] Park I. Initial outcomes of endovenous laser ablation with 1940 nm diode laser in the treatment of incompetent saphenous veins[J]. Vascular, 27, 27-32(2019).

[58] Li C F. The clinical application of 2 μm laser treatment of bladder stones[D](2014).

[59] Lubatschowski H, Fiebig M, Fuhrberg P et al. Characterization of tissue processing with a continuous-wave Tm∶YAG laser at 2.06-μm wavelength[J]. Proceedings of SPIE, 3254, 249-253(1998).

[60] Netsch C, Bach T, Herrmann T R et al. Thulium: YAG VapoEnucleation of the prostate in large glands: a prospective comparison using 70-and 120-W 2-μm lasers[J]. Asian Journal of Andrology, 14, 325-329(2012).

[61] Liang J H. Laser-tissue interaction of modern laser systems used in urological surgery[D](2007).

[62] Traxer O, Keller E X. Thulium fiber laser: the new player for kidney stone treatment? A comparison with Holmium∶YAG laser[J]. World Journal of Urology, 38, 1883-1894(2020).

[63] Zhang J J, Rajabhandharaks D, Xuan J R et al. Water content contribution in calculus phantom ablation during Q-switched Tm∶YAG laser lithotripsy[J]. Journal of Biomedical Optics, 20, 128001(2015).

[64] Kamal W, Kallidonis P, Koukiou G et al. Stone retropulsion with Ho∶YAG and Tm∶YAG lasers: a clinical practice-oriented experimental study[J]. Journal of Endourology, 30, 1145-1149(2016).

[65] Teichman J M H, Chan K F, Cecconi P P et al. Erbium∶YAG versus holmium∶YAG lithotripsy[J]. The Journal of Urology, 165, 876-879(2001).

[66] Kronenberg P, Traxer O. The laser of the future: reality and expectations about the new thulium fiber laser-a systematic review[J]. Translational Andrology and Urology, 8, S398-S417(2019).

[67] Hardy L A, Wilson C R, Irby P B et al. Thulium fiber laser lithotripsy in an in vitro ureter model[J]. Journal of Biomedical Optics, 19, 128001(2014).

[68] Wilson C R, Hardy L A, Pierce B Irby M D et al. Proximal fiber tip damage during Holmium∶YAG and thulium fiber laser ablation of kidney stones[J]. Proceedings of SPIE, 9689, 96891Q(2016).

[69] Dymov A, Glybochko P, Alyaev Y et al. V11-11 thulium lithotripsy: from experiment to clinical practice[J]. Journal of Urology, 197, e1285(2017).

[70] Dymov A M, Rapoport L, Enikeev D et al. Prospective clinical study on superpulse thulium fiber laser: initial analysis of optimal laser settings[J]. European Urology Supplements, 18, e500(2019).

[71] Enikeev D, Taratkin M, Klimov R et al. Thulium-fiber laser for lithotripsy: first clinical experience in percutaneous nephrolithotomy[J]. World Journal of Urology, 38, 3069-3074(2020).

[72] Liu J N, Liu X Z, Liu D Y et al. Percutaneous nephrolithotripsy with 2 μm laser in treating nephritic staghorn calculi[J]. Chongqing Medicine, 40, 3355-3356(2011).

[73] Liao G Y. Clinical efficacy of percutaneous nephroscope thulium laser lithotripsy in the treatment of calculus in renal calyx diverticulum[J]. Laboratory Medicine and Clinic, 15, 2959-2960(2018).

[74] Jiang Z Y, Li X D, He Q X et al. Treatment of bladder outlet obstruction with bladder stones with 2 μm laser combined with holmium laser[J]. Journal of Clinical Urology, 27, 946-947(2012).

[75] Han G, Zhang J Y, Chen Y D et al. RevoLix 2 μm laser in percutaneous nephrolithotomy with blood coagulation[J]. Chinese Journal of Laser Medicine & Surgery, 24, 163-164, 174(2015).

[76] Yin X S, Liu B, Gao F et al. The effect of percutaneous bladder micro-puncture drainage combined with transurethral 2-μm thulium laser lithotripsy on treatment of pediatric bladder calculus[J]. Chinese Journal of Health Care and Medicine, 19, 405-407(2017).

[77] Sun F, Chen B C, Zhai Y Z et al. Analysis of the therapeutic effect of simultaneously thulium laser with minimally invasive percutaneous nephrolithotomy in the management of caliceal diverticular calculi[J]. Journal of Modern Urology, 21, 292-294(2016).

[78] Sun F, Zhai Y Z, Chen B C et al. Efficacy and safety of combined application of flexible cystoscopy and thulium laser in standard percutaneous nephrolithotomy for complex renal calculi[J]. Chinese Journal of Laser Medicine & Surgery, 26, 181-184(2017).

[79] Yan D Y, Liu B W, Song H Y et al. Research status and development trend of high power femtosecond fiber laser amplifiers[J]. Chinese Journal of Lasers, 46, 0508012(2019).

[80] Lü M X, Shi X W, Xue J W et al. Laser-induced liquid micro-jet effect and its application in medical field[J]. Laser & Optoelectronics Progress, 58, 1100004(2021).

[81] Wang J J, Wang C, Yang Y N et al. Study on the influence of new inner cladding shape on theabsorption efficiency of thulium-doped fiber[J]. Laser & Optoelectronics Progress, 58, 1706009(2021).

[82] Darwich D, Dauliat R, Jamier R et al. 50.4% slope efficiency thulium-doped large-mode-area fiber laser fabricated by powder technology[J]. Optics Letters, 41, 384-387(2016).

[83] Kadwani P, Modsching N, Sims R A et al. Q-switched thulium-doped photonic crystal fiber laser[J]. Optics Letters, 37, 1664-1666(2012).