Generation of watt-level single-longitudinal-mode output from cladding-pumped short fiber lasers

Qiu, Tiequn; Suzuki, Shigeru; Schülzgen, Axel; Li, L.; Polynkin, Alexander; Temyanko, V. L.; Moloney, Jerome V.; Peyghambarian, N.

doi:10.1364/ol.30.002748

Cited by 61 publications

(30 citation statements)

References 8 publications

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“…Power scaling of a single-frequency fiber laser emitting at 1.5 µm was investigated in 2005 [79] by using a DC heavily Yb 3+ /Er 3+ co-doped phosphate fiber, cladding-pumped by multi-mode laser diodes at 976 nm. 1.6 W of single-longitudinal mode output power was reported from a 5.5 cm length of fiber, although the slope efficiency was limited at 5%.…”

Section: Er and Yb/er Co-doped Single-frequency Phosphate Fiber Lasersmentioning

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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Section: Er and Yb/er Co-doped Single-frequency Phosphate Fiber Lasersmentioning

confidence: 99%

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

et al. 2017

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“…Since the first introduction [1,2], high perfor mance single frequency fiber oscillator and laser [3][4][5][6][7][8][9][10] have attracted considerable attention in the past few years. Good beam quality, robustness and suffi cient output are important characteristics for these laser systems.…”

Section: Introductionmentioning

confidence: 99%

Nd-doped phosphate glass microstructured optical fiber laser

et al. 2010

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Abstract-We experimentally demonstrated a single mode laser at 1056 nm with Nd doped phosphate glass microstructured optical fiber (MOF), which was fabricated with conventional stack and draw method. The laser action was observed from a Fabry-Perot cavity formed by placing two dichroic mirrors of ~100 and 85% reflectivity, to the two end facets of MOF. Pumped by CW laser diodes (LDs) at 808 nm, the MOF laser yielded a maximum output power of 8.5 mW and a slope efficiency of 2%.

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“…Obviously, our method to generate watt-level SLM fiber laser is economic and easy to operate. Aslo, it changes the usual view that the core-pumped single frequency fiber laser is impossible to generate wattlevel output power [2]. Certainly, the laser would have lower threshold and more stable output if using polarization-maintaining fibers [13].…”

mentioning

confidence: 99%

“…Recently, the output power of fiber lasers grew quickly, but SLM fiber lasers did not [1]. SLM fiber lasers can be boosted to watt-level [2,3], but it is still a challenge to preserve high OSNR. Besides, the output power of SLM fiber laser is also limited by the backward stimulated Brillouin scattering (SBS) [3,4].…”

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confidence: 99%

Watt-level ultrahigh-optical signal-to-noise ratio single-longitudinal-mode tunable Brillouin fiber laser

et al. 2012

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A watt-level ultrahigh optical signal-to-noise ratio (OSNR) single-longitudinal-mode (SLM) tunable Brillouin fiber laser (BFL) has been demonstrated. By optimizing the length of the single mode fiber (SMF) cavity at 11m and its output ratio at sixty percent, 1.04 W output power, as well as stable SLM operation is obtained at 2.24 W pump power. The single pass cavity BFL has the advantage that Brillouin pump frequency doesn't need to match the cavity mode, thus the stability is greatly improved. As only SMF is used in the cavity, the operate wavelength can be tunable without the restriction from self lasing cavity mode. Furthermore, it proves that core-pumped single frequency fiber laser is able to generate watt-level power. The laser has excellent performance in terms of noise, linewidth, and stability. © 2012 Optical Society of America OCIS code: 060.3510, 140.3510, 190.2640. High power single-longitudinal-mode (SLM) fiber lasers with high optical signal-to-noise ratio (OSNR) have enormous applications such as remote sensing, ladar, coherent detection, and nonlinear optics. Recently, the output power of fiber lasers grew quickly, but SLM fiber lasers did not [1]. SLM fiber lasers can be boosted to watt-level [2,3], but it is still a challenge to preserve high OSNR. Besides, the output power of SLM fiber laser is also limited by the backward stimulated Brillouin scattering (SBS) [3,4]. Owing to narrow band gain of SBS, Brillouin fiber lasers (BFLs) with ~10m cavity can operate at SLM status. Though the threshold of BFLs [5] can be reduced to submilliwatt level, but the pump frequency has to match the cavity mode. This causes a big trouble for practical operation owing to the inevitable fluctuation of pump frequency. Moreover, it is difficult to output large power as the cavity is critically coupled [5]. Hybrid BFLs including active media don't need the critically coupled resonator [6], and they are able to achieve large power. A 1 W SLM Brillouin/ytterbium fiber laser with 60 dB OSNR has been demonstrated [7]. However, for a hybrid BFL, the wavelength tunability is limited at the self-lasing range [8]. Besides, it inevitably introduces amplified spontaneous emission (ASE) noise from active fibers. Different than hybrid BFLs, the BFLs without active fibers have wider tunable range, higher OSNR, and narrower linewidth. A SLM BFL with 12 m length cavity has been reported and shown stable output power [9]. In this letter, only SMF is used in the single pass cavity. By exploiting the high efficiency of SBS in fibers and the large output ratio of the lasing cavity, we demonstrate a wattlevel SLM tunable BFL with 75dB OSNR.Figure1 shows the configuration of the BFL, which consists of a tunable laser source (TLS) with 100 kHz linewidth, an erbium-doped fiber amplifier (EDFA), a polarization controller (PC), an optical circulator (OC) with 20% power loss, a 60/40 coupler with 5% loss. The cavity length is 11 m, corresponding to 18 MHz free spectral range. The laser from TLS is amplified by the EDFA as the input Brill...

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Generation of watt-level single-longitudinal-mode output from cladding-pumped short fiber lasers

Cited by 61 publications

References 8 publications

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

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

Nd-doped phosphate glass microstructured optical fiber laser

Watt-level ultrahigh-optical signal-to-noise ratio single-longitudinal-mode tunable Brillouin fiber laser

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