The performance of double-clad ytterbium-doped fiber laser with different pumping wavelengths

Abstract

Abstract:The effect of pumping wavelengths on the performance of double-clad Ytterbium-doped fiber laser (YDFL) is experimentally demonstrated. The YDFL is constructed using a fiber Bragg grating as wavelength selective filter in a linear cavity resonator. The YDFL operates at wavelength of 1064.4 nm with a bandwidth of 0.2 nm and signal to noise ratio of more than 30 dB. The efficiency of the YDFL is observed to depend on the absorption cross section spectrum of the YDF. The slope efficiencies of the YDFL are obtained at 60.4% and 67.5% for the pumping wavelengths of 937 nm and 967 nm, respectively. The threshold power to achieve lasing is approximately 0.5 W for both pumping wavelengths.

Effective pulse recompression after nonlinear spectral broadening in picosecond Yb-doped fiber amplifier

“…That allowed us to deter mine the optimal fiber length of ~5-7 m. We also found that optimal fiber length is not dependent on used pumping wavelength. The gain at 975 nm is slightly higher than at 915 nm because of higher absorption coefficient [20]. But we chose 915 nm for pumping because it provides lower tolerance of gain fluctuation due to pump wavelength variation.…”

Switchable Dual-Wavelength Mode-Locked Fiber Laser Source for In-PCF Parametric Frequency Conversion Applied to CARS Microscopy

“…Furthermore, the development of SESAM devices has expanded the applicability in the industry of lasers due to its reliable design and flexibility [23], allowing easyhandle self-starting passive mode-locking by properly choosing the cavity design and controlling the growth parameters of the SESAM semiconductor material [24]. In particular, the advances in ytterbium-doped ultrafast fiber lasers with SESAM technology have demonstrated that Ybdoped fibers are the best option as the gain medium for generation and amplification of SESAM-based mode-locking ultrashort pulses around 1µm wavelength range [25,26] as a consequence of its broad absorption and emission bandwidth, large saturation fluences and high optical conversion efficiencies [27][28][29][30][31].…”

Linearly polarized ytterbium-doped fiber laser in a pedestal design with aluminosilicate inner cladding

“…It is a versatile source for pulsed [1][2][3] and continuous-wave [4][5][6] operations, and in combination with fiber components such as fiber based gratings it can be utilized for distributed feedback laser [7] or tunable laser [8].…”