Journal
LASER & PHOTONICS REVIEWS
Volume 3, Issue 5, Pages 466-482Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/lpor.200810058
Keywords
Spectroscopy; energy transfer; infrared; fibre lasers; thulium; holmium
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The continuing growth in the research and development of high power diode-pumped fibre lasers relates to the exceptional thermal management provided by the extended geometry of the fibre and the small quantum defect associated with the 1 mu m emitting Yb3+ ion. Lengthening the emission wavelength of diode-pumped fibre lasers further into the infrared is important for many applications ranging from medicine to defence: however, extending the emission wavelength remains a challenge. This review will examine in detail the spectroscopy and the energy transfer processes that impact Tm3+-doped and Ho3+-doped silicate glasses that are used for fibre lasers in the 1.9 mu m to 2.1 mu m region of the shortwave infrared spectrum. We will explore a number of important applications that function in the shortwave infrared region that will benefit from using these light sources and I will suggest the reasons for choosing silicate glass over other glasses as the host material for this wavelength range.
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