Ultrabroadband near-infrared emission from a colorless bismuth-doped glass

Abstract

The characteristics of bismuth-doped glasses were investigated as colorless ultrabroadband near-infrared gain media. The colorless Bi-doped soda-lime-silicate glass was prepared under controlled redox conditions, and it realized the broadest near-infrared emission of about 600nm in full width at half maximum, centered at 1000nm, under 720nm excitation. The emission band extended toward shorter wavelengths compared with the shortest wavelength for the Bi-doped glass ever reported. The colorless Bi-doped glass developed in this work has a good potential for the broadband gain media for amplifiers and tunable lasers.

New Infrared Luminescence from Bi-doped Glasses

“…Different authors tentatively assigned the different origins of this near infrared luminescence to the electronic transition derived from Bi 5+ (Fujimoto & Nakatsuka 2001;Dvoyrin, Mashinsky et al 2006;Fujimoto & Nakatsuka 2006;Ohkura, Fujimoto et al 2007), Bi 2+ Ren, Dong et al 2008), and Bi + ; Table 2): (a) transmittance spectrum shows five main absorption bands between 250 and 2000 nm, including 300 nm (A), 500 nm (B), 700 nm (C), 800 nm (D), and 1000 nm (E), and (b) luminescent spectra excited by 500, 700, 800, and 1000 nm. Dvoyrin, Mashinsky et al 2006;Arai, Suzuki et al 2007;Yang, Chen et al 2007;Zhou, Feng et al 2007;Qiu, Peng et al 2008;Ren, Dong et al 2008;Truong, Bigot et al 2008) or to that of BiO molecules (Ren, Yang et al 2006;Murata & Mouri 2007;Peng, Chen et al 2007;Peng, Wu et al 2008) dispersed in the glass host. Since most of these proposals were however analogized from only spectroscopic mesurement analysis, uncertainty remains in the present discussions.…”

“…Then the investigation of new glass compositions with Bi luminescence is also progressing vigorously in a past decade. Although the first discovered glass was a silica-based material with a SiO 2 of 97.5 mol% (Fujimoto & Nakatsuka 2001), many glass compositions were tested and shown to effectively generate Bi luminescence, such as silicate Ren, Yang et al 2006;Suzuki & Ohishi 2006;Arai, Suzuki et al 2007;Murata & Mouri 2007;Peng, Chen et al 2007;Zhou, Feng et al 2007;Peng, Wu et al 2008), germanate (Peng, Qiu et al 2004;Peng, Meng et al 2005;Peng, Wang et al 2005;Murata & Mouri 2007;Ren, Wu et al 2007;Ren, Dong et al 2007;Ren, Qiao et al 2007;Peng, Wu et al 2008;Qiu, Peng et al 2008), borate Murata & Mouri 2007;Qiu, Peng et al 2008), germanosilicate (Ren, Dong et al 2007;Ren, Dong et al 2008), and phosphate Qiu, Peng et al 2008) glasses. In this chapter, the author will introduce the basic properties of Bi doped silica glass (BiSG), such as a phase diagram and spectroscopic properties, and then mainly talk about the origine of luminescent center.…”

Ultrabroad emission from a bismuth doped chalcogenide glass

“…A wide variety of traditional glass hosts containing Bi have been investigated so far, mainly silicates [1][2][3] and germanates [4][5][6] but also phosphates [7] and borates [8]. The product of the emission cross section and lifetime (σ em τ), which is inversely proportional to the laser threshold, has often been calculated and is usually found to be considerably higher than traditional laser materials such as Ti:sapphire.…”

Expanding broadband emission in the near-IR via energy transfer between Er3+–Tm3+ co-doped tellurite-glasses

“…Nevertheless, it is well known that the emission and amplification of the RE cover separately the O-, E-, S-, C-, L-and U-bands. The enhancement of the amplification bandwidth is thus a current challenge and several approaches have been explored in view to achieve optical amplification covering the entire telecommunication window by: (i) doping glass with metal ions such as Bismuth [5][6][7] or Nickel [8]; (ii) generating supercontinuum light in highly non-linear optical fiber [9][10][11] and (iii) co-doping glass with RE ions [12][13][14]. For the latter, tellurite host glass are usually preferred own to its properties cited above.…”