2014
DOI: 10.1063/1.4866446
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Ultralow-threshold laser and blue shift cooperative luminescence in a Yb3+ doped silica microsphere

Abstract: An experimental investigation on ultralow threshold laser and blue shift cooperative luminescence (CL) in a Yb3+ doped silica microsphere (YDSM) with continuous-wave 976 nm laser diode pumping is reported. The experimental results show that the YDSM emits laser oscillation with ultralow threshold of 2.62 μW, and the laser spectrum is modulated by the microsphere morphology characteristics. In addition, blue emission of YDSM is also observed with the increase of pump power, which is supposed to be generated by … Show more

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Cited by 21 publications
(10 citation statements)
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References 31 publications
(34 reference statements)
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“…An ultralow-threshold Yb 3 þ doped SiO 2 glass microsphere laser has been reported by Vahala's team, which was about 1.8 mW [6]. Our team also observed a very low threshold multi-mode laser emission in 1064 nm band and blue shift cooperative luminescence in a Yb 3 þ doped SiO 2 microspheres, the threshold was about 2.6 mW [7,8]. Nd 3 þ is also one of the most popular laser active ions among all the REIs [9].…”
Section: Introductionsupporting
confidence: 58%
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“…An ultralow-threshold Yb 3 þ doped SiO 2 glass microsphere laser has been reported by Vahala's team, which was about 1.8 mW [6]. Our team also observed a very low threshold multi-mode laser emission in 1064 nm band and blue shift cooperative luminescence in a Yb 3 þ doped SiO 2 microspheres, the threshold was about 2.6 mW [7,8]. Nd 3 þ is also one of the most popular laser active ions among all the REIs [9].…”
Section: Introductionsupporting
confidence: 58%
“…The experiment presented the characteristics of NDSM laser oscillation exactly. Compared to Yb 3 þ doped silica microsphere lasers which were pumped by a 976 nm laser diode [7], the Stokes shift is as large as 3000 cm À 1 which is the down conversion from the pumped laser (808 nm) to the output emission (1100 nm), and it is beneficial to get accurate signal separation and collection.…”
Section: Introductionmentioning
confidence: 99%
“…The detailed process of the cooperative UC luminescence of Yb 3 þ ion pairs has been explained in the previous paper [17,18]. The red emission is weak in the Er 3 þ /Yb 3 þ co-doped oxyfluoride glass ceramic microspheres [27], but it is significantly enhanced when Tm 3 þ is introduced into the system.…”
Section: Resultsmentioning
confidence: 97%
“…The microspheres were fabricated by the butane flame melting of the annealed glass filaments with diameter ranging from 20 to 50 μm. We also tried to form the microspheres by arc-melting the glass filaments with electrode discharge of a fusion splicer [18], but the microspheres had a serious crystallization and became devitrification due to the exorbitant discharge temperature. Fig.…”
Section: Methodsmentioning
confidence: 99%
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