Low-noise single-frequency 50 W fiber laser operating at 1013 nm

Abstract

We have developed a 50 W all-fiber, single-frequency (SF), low-noise master oscillator power amplifier laser operating at 1013 nm, with an efficiency of 67%. The output signal shows an optical signal-to-noise ratio of 50 dB and excellent noise properties. These are to date and to the best of our knowledge, the highest reported figures of merit for a SF laser at this wavelength. The relative intensity noise of the laser is analyzed and is shown to follow the theoretical behavior for fiber amplifier.

Ultra-low intensity noise, all fiber 365 W linearly polarized single frequency laser at 1064 nm

“…functional quantum calculators [4]), the need for single frequency (SF) high-power fiber lasers has been increasing over the last decade. The ability to maintain an excellent modal quality, the wide tuning range in the Ytterbium (Yb) band [5][6][7][8], the linear polarization and the optical low-noise operation is driving this technology as an excellent replacement for more established high-power bulk systems in the 1 µm region.…”

Fiber based high power low noise single frequency lasers and applications

“…The solution is to use short fibers, to limit ASE gain and ensure strong pump intensity all along the fiber but this impairs the efficiency and leaves a strong residual pump. Despite those problems we have demonstrated an efficient laser (67%) around 1013nm able to deliver up to 50W before photodarkening with low noise and good modal quality [5] (see fig 1 (b)). The industrial version of this lasers (10W) is currently used in the quantum processing unit under development in several laboratories and start-ups.…”

High-power single-frequency fiber amplifiers: progress and challenge [Invited]

“…In addition, employing a seeder laser with a very low level of noise could also lead to improved noise performance of the amplified single-frequency laser, and this has been respectively verified at 1.0 μm [123] , 1.5 μm [95] , and 2.0 μm [124] , respectively. With the routine optimizing strategy, there have been demonstrations on low-noise Yb-doped SFFAs that operate at the edge range of the Yb emission with the output power of several tens of watts, aiming to provide interrogating sources for such applications as atomic spectroscopy [125][126][127] . In addition, low-noise SFFAs with higher operation powers (maximum 200 W) have also been reported at 1.0 μm [107,108] and 1.5 μm [96] , respectively, for applications in the well-known GWD.…”