DOUBLE CLAD HIGH BRIGHTNESS Nd FIBER LASER PUMPED BY GaAlAs PHASED ARRAY

Po, Hong; Snitzer, E.; Tumminelli, R.; Zenteno, L.A.; Hakimi, F.; Cho, N. M.; Haw, Thomas E.

doi:10.1364/ofc.1989.pd7

Cited by 72 publications

(25 citation statements)

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“…5 m of Nd : Si0 2 single-mode, double-clad FL was used in these experiments [6] . A 500 mW GaAs laser diode pump was butt-coupled to the rectangular first cladding of the FL [7] ; absorption per unit length at the pump wavelength was 2 dB m -1 .…”

Section: Characteristics Of Fibre Laser and Pzt Ring Modulatormentioning

confidence: 99%

Observation of Fibre Laser Instabilities Through Modulation of the Cavity Optical Length

Zenteno

1991

Journal of Modern Optics

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Section: Characteristics Of Fibre Laser and Pzt Ring Modulatormentioning

confidence: 99%

Observation of Fibre Laser Instabilities Through Modulation of the Cavity Optical Length

Zenteno

1991

Journal of Modern Optics

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“…The initial development within optical fibre research is correlated with the communications revolution which required low optical loss fibre for the transmission of information over long distances and specialty fibre designed for amplifying the information. The last requirement not only led to the development of rare earth doped optical fibre [1,2] for the erbium doped fibre amplifier (EDFA) [3] which amplified signals in the low loss spectral region of silicate glass at 1.5 μm but also to the development of cladding pumping [4,5] which relaxed the beam quality requirements of the pump source allowing the use of high power diode lasers which led to significantly higher optical gains and output power.…”

Section: Introductionmentioning

confidence: 99%

The spectroscopic and energy transfer characteristics of the rare earth ions used for silicate glass fibre lasers operating in the shortwave infrared

Jackson

2009

Laser & Photonics Reviews

124

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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 μm emitting Yb 3+ 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 Tm 3+ -doped and Ho 3+ -doped silicate glasses that are used for fibre lasers in the 1.9 μm to 2.1 μm 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.A Tm 3+ -doped aluminosilicate glass in a glass-working lathe in the process of being collapsed into a preform ready for drawing into double clad optical fibre. The red glow that can be observed in the centre of the preform is the thermoluminescence from the Tm 3+ ions being heated to approximately 2000°C.

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“…High powers are possible from a fiber laser due to the use of cladding-pumped (double clad) fiber (CPF). 6,7 To achieve high power operation using this technology, techniques must be developed for coupling large amounts of power from diodes into the fiber. Several methods have emerged for this including tapered fiber bundles (TFB).…”

Section: Introductionmentioning

confidence: 99%