Dual-band 810/1480 nm Tm³⁺:ZBLAN fiber laser

Abstract

We demonstrate a dual-band Tm 3+ :ZBLAN fiber laser emitting simultaneously at 810 nm and 1487 nm through two transitions originating from the 3 H 4 energy level. Upconversion pumping at 1064 nm is used.

Three-wavelength Tm^3+:ZBLAN fiber laser and its applications in water detection

“…All three FBGs have a peak reflectivity R > 99 %. In both branches, the gain fiber is double-cladding ZBLAN fiber manufactured by IRphotonics/Thorlabs, doped with 8,000 ppm Tm 3+ [4]. The Tm 3+ :ZBLAN fibers are coupled to the SMF-28 fibers through mechanical splices (represented by the '×' in Fig.…”

“…By measuring absorption patterns at several wavelengths, they can be used to detect chemicals with improved sensitivity and specificity. We have previously demonstrated dualwavelength lasing around 1480 nm through the 3 H 4  3 F 4 transition [3], as well as a dual-band fiber laser operating simultaneously at 810 nm and 1480 nm [4]. However, none of the previous reports made an attempt to apply the multiwavelength functionality for chemical detection or sensing.…”

Red laser-diode pumped 806 nm Tm3+: ZBLAN fibre laser

“…Tm 3+ : ZBLAN fibres can be efficiently pumped at around this wavelength to provide high gain at ~800 nm. This transition ( 3 F 4 → 3 H 6 ) is very efficient because it presents high radiative emission with a long lifetime (~1.3 ms) [11]. This pumping scheme presents very little excited state absorption for the pump wavelength and it is negligible for signal.…”

Quantification of different water species in acetone using a NIR-triple-wavelength fiber laser

“…In both cases, up-conversion pumping at 1064 nm in a Tm 3+ :ZBLAN fiber was used. Additionally, dual-band operation at 810/1480 nm in a single piece of Tm 3+ :ZBLAN fiber has been achieved, with both lasing transitions sharing the same upper energy level ( 3 H 4 → 3 H 6 , 3 H 4 → 3 F 4 ) [16]. Finally, dual-wavelength lasing at 1942 nm was achieved in a Tm 3+ :silica fiber by pumping at around 790 nm and using two highly birefringent fiber Bragg gratings (FBGs) [17].…”