Ho-Yb Fluoride Glass Fiber for Green Lasers

Shikida, Aki; Yanagita, Hiroaki; Toratani, Hisayoshi

doi:10.1364/assl.1993.lm21

Cited by 1 publication

(1 citation statement)

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“…0.8 [27] Emission cross-section of Ho (102i m2) 1.21 [26] 0.7 [27] Phonon energy (cm') 506 [24] 1100 [25] (although this fact cannot be concluded from the results in the table because ofthe difference in doping concentrations for the fibres listed). However in order to power scale these devices, high-power laser diodes which have substantially lower beam quality are required.…”

Section: [15]mentioning

confidence: 99%

<title>Modeling of multiwatt cw diode-pumped double-cladded fiber lasers for medical applications</title>

1996

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Theoretical modelling of high-power thulium-sensitised holmium fluorozirconate glass (Tm:Ho:ZBLAN) fibre lasers operating on the 2 tm transition in holmium is presented. High output power in single-mode is achieved by pumping the inner cladding of double clad fibre with single-mode core with high-power multimode cw diode lasers. The higher output powers possible with the doublecladded fibre laser (or DCFL) over the core-pumped fibre laser means that these particular lasers are suited to a number of medical applications which require output of high power and low divergence. In a preliminary step to optimise these devices, a computer model has been developed to analyse the performance ofthe device when the length ofthe fibre configuration and doping are varied. It is shown that the form of the coupling coefficient which relates the transfer of power from nonabsorbing modes to absorbing modes which propagate within the inner cladding and core ofthe fibre is paramount to the operation ofthe DCFL.

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