Fast widely-tunable single-frequency 2-micron laser for remote-sensing applications

Sammy W. Henderson; Charley P. Hale

doi:10.1117/12.2277089

30 August 2017 Fast widely-tunable single-frequency 2-micron laser for remote-sensing applications

Sammy W. Henderson, Charley P. Hale

Proceedings Volume 10406, Lidar Remote Sensing for Environmental Monitoring 2017; 104060C (2017) https://doi.org/10.1117/12.2277089
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

We are developing a family of fast, widely–tunable cw diode-pumped single frequency solid-state lasers, called Swift. The Swift laser architecture is compatible with operation using many different solid-state laser crystals for operation at various emission lines between 1 and 2.1 micron. The initial prototype Swift laser using a Tm,Ho:YLF laser crystal near 2.05 micron wavelength achieved over 100 mW of single frequency cw output power, up to 50 GHz-wide, fast, mode-hop-free piezoelectric tunability, and ~ 100 kHz/ms frequency stability. For the Tm,Ho:YLF laser material, the fast 50 GHz tuning range can be centered at any wavelength from 2047-2059 nm using appropriate intracavity spectral filters. The frequency stability and power are sufficient to serve as the local oscillator (LO) laser in long-range coherent wind-measuring lidar systems, as well as a frequency-agile master oscillator (MO) or injection-seed source for larger pulsed transmitter lasers. The rapid and wide frequency tunablity meets the requirements for integrated-path or range-resolved differential absorption lidar or applications where targets with significantly different line of sight velocities (Doppler shifts) must be tracked. Initial demonstration of an even more compact version of the Swift is also described which requires less prime power and produces less waste heat.

Citation Download Citation

Sammy W. Henderson and Charley P. Hale "Fast widely-tunable single-frequency 2-micron laser for remote-sensing applications", Proc. SPIE 10406, Lidar Remote Sensing for Environmental Monitoring 2017, 104060C (30 August 2017); https://doi.org/10.1117/12.2277089

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