Gain and noise characteristics of single-mode Er&lt;sup&gt;3+&lt;/sup&gt;/Yb&lt;sup&gt;3+&lt;/sup&gt; Co-doped phosphate glass fibers

Zhao, Qilai; Yang, Zhongmin; Feng, Zhouming; Zhang, Q.Y.; Jiang, Zhong; Xu, Wen‐Cheng

doi:10.1109/inec.2008.4585566

Cited by 3 publications

(4 citation statements)

References 10 publications

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“…A maximum internal gain of 10.7 ± 0.7 dB was obtained with the minimum input signal (−30 dBm) and a 479 mW pump power. This leads to an internal gain per unit length of 4.0 ± 0.1 dB cm −1 , a value that is higher than values reported in [22,23] and comparable to the values reported in [24,25] (4.2 dB cm −1 and 5.2 dB cm −1 ). Detailed description and discussion of gain measurement results in core-pumped configuration can be found in [26].…”

Section: Core-pumped Amplifier Demonstrationsupporting

confidence: 47%

High concentration Yb-Er co-doped phosphate glass for optical fiber amplification

Boetti

Scarpignato

Lousteau

et al. 2015

J. Opt.

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We present the fabrication and characterization of two high concentration Yb 3+ -Er 3+ co-doped double clad phosphate glass optical fibers (named A and B for short) manufactured by preform drawing, with the preform being obtained by the rod-in-tube technique. Optical amplification was demonstrated by core pumping 27 mm of fiber A (7/25/70 μm and NA = 0.17 between core and inner cladding) with a laser diode at 976 nm, achieving a 10.7 dB internal gain, i.e., 4.0 dB cm −1 , for small signal input at 1535 nm. Amplification was also demonstrated in a cladding-pumped counter propagating configuration using both fibers A and B (12/48/140 μm and NA = 0.08). A maximum internal gain of 18.5 dB was achieved with 8 cm of fiber B, corresponding to an amplification of 2.3 dB cm −1 , for small signal input at 1535 nm.

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Section: Core-pumped Amplifier Demonstrationsupporting

confidence: 47%

High concentration Yb-Er co-doped phosphate glass for optical fiber amplification

Boetti

Scarpignato

Lousteau

et al. 2015

J. Opt.

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“…In 2008 5 cm-long single-mode heavily Yb 3+ /Er 3+ co-doped fiber was used to demonstrate optical amplification of signal in the range 1525-1565 nm [56]. The fiber, doped with 1 mol% of Er 3+ and 2 mol% of Yb 3+ , was dual-pumped by two 976 nm fiber pigtailed laser diodes.…”

Section: Er and Yb/er Co-doped Phosphate Fiber Lasers And Amplifiersmentioning

confidence: 99%

Highly Doped Phosphate Glass Fibers for Compact Lasers and Amplifiers: A Review

et al. 2017

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Abstract:In recent years, the exploitation of compact laser sources and amplifiers in fiber form has found extensive applications in industrial and scientific fields. The fiber format offers compactness, high beam quality through single-mode regime and excellent heat dissipation, thus leading to high laser reliability and long-term stability. The realization of devices based on this technology requires an active medium with high optical gain over a short length to increase efficiency while mitigating nonlinear optical effects. Multicomponent phosphate glasses meet these requirements thanks to the high solubility of rare-earth ions in their glass matrix, alongside with high emission cross-sections, chemical stability and high optical damage threshold. In this paper, we review recent advances in the field thanks to the combination of highly-doped phosphate glasses and innovative fiber drawing techniques. We also present the main performance achievements and outlook both in continuous wave (CW) and pulsed mode regimes.Keywords: fiber laser and amplifier; phosphate fiber; all-fiber master oscillator power amplifier (MOPA); rare-earth-doped fiber

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“…In principle, the stronger emission cross-section of the Er 3+ -doped fiber is mainly concentrated in the wavelength range of 1530-1560 nm, which is much higher than that in the L-band (including 1603 nm) [16]. According to the energy level diagram of Er 3+ , L and C-band emission share the approximate sublevels ( 4 I13/2a and 4 I13/2b) splitting from the energy level 4 I13/2 [14][15][16]. Since the upper sublevel 4 I13/2b has more particles than 4 I13/2a, 4 I13/2b can be applied as another source of particles for lasers at 1603 nm.…”

Section: Theoretical Analysismentioning

confidence: 98%

“…A linearly-polarized SFFL at 1603 nm with an output power of 20 mW and a laser linewidth of 1.9 kHz has been successfully achieved on the foundation of the heavily Er 3+ /Yb 3+ co-doped phosphate glass fiber in our group [13]. Unfortunately, for the 1.6 μm SFFLs all-fiber master-oscillator power-amplifier (MOPA) configuration, the output powers were usually limited within 20 W and slope efficiencies were around 20% in several experiments because of the low emission cross-section of Er 3+ ion near 1.6 μm [6,[14][15][16]. Besides, the power scaling of 1.6-μm lasers is facile to be saturated, and the signal characteristics severely degrade due to a large amount of the amplified spontaneous emission (ASE) [13,17].…”

Section: Introductionmentioning

confidence: 99%

High-efficiency and high-power single-frequency fiber laser at 1.6 μm based on cascaded energy-transfer pumping

et al. 2020

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In this paper, a technique combing cascaded energy-transfer pumping (CEP) method and master-oscillator power-amplifier (MOPA) configuration is proposed for power scaling of 1.6-μm-band single-frequency fiber lasers (SFFLs), where the Er 3+ ion has a limited gain. The CEP technique is fulfilled by coupling a primary signal light at 1.6 μm and a C-band auxiliary laser. The numerical model of the fiber amplifier with the CEP technique reveals that the energy transfer process involves the pump competition and the in-band particle transition between the signal and auxiliary lights. Moreover, for the signal emission, the population density in the upper level is enhanced and the effective population inversion is achieved due to the CEP. A single-frequency MOPA laser at 1603 nm with an output power of 52.6 W and an improved slope efficiency of 30.4% is obtained experimentally through the CEP technique. Besides, a laser linewidth of 5.2 kHz and a polarization-extinction ratio of ~18 dB are obtained at the maximum output power. The proposed technique provides an optional method of increasing the slope efficiency and power scaling for fiber lasers operating at L-band.

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Gain and noise characteristics of single-mode Er<sup>3+</sup>/Yb<sup>3+</sup> Co-doped phosphate glass fibers

Cited by 3 publications

References 10 publications

High concentration Yb-Er co-doped phosphate glass for optical fiber amplification

High concentration Yb-Er co-doped phosphate glass for optical fiber amplification

Highly Doped Phosphate Glass Fibers for Compact Lasers and Amplifiers: A Review

High-efficiency and high-power single-frequency fiber laser at 1.6 μm based on cascaded energy-transfer pumping

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