Fast tunable single-frequency Yb-doped fiber laser

We have been developing a fast-tunable, single-frequency optical parametric oscillator (OPO) capable of emitting wavelengths between 2500 nm and 5200 nm, with the aim of achieving watt-level output for rapid remote gas sensing. To meet these performance goals, our efforts have been focused on constructing a high-power, single-frequency fiber laser at a wavelength of 1 μm with rapid tunability across 30 nm, which is intended to serve as its pump laser. This pump source, an Yb-doped fiber laser, employs a ring cavity design combined with a saturable absorber to ensure single-frequency operation. It will be amplified through a master oscillator power amplifier (MOPA) architecture, enabling it to achieve an output power of at least 10 W. We are confident that this progress will improve mid-wave infrared (MWIR) laser technologies and measurement technologies, particularly in calibrating MWIR detectors and spectrometers. This has the potential to widely impact various environmental applications and further the capabilities of MWIR technology.