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9 October 2021 Automatic control of the tuning parameters of a self-sweeping Tm-doped fiber laser
A. E. Budarnykh, I. A. Lobach, N. N. Smolyaninov
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Proceedings Volume 11901, Advanced Sensor Systems and Applications XI; 119010M (2021) https://doi.org/10.1117/12.2602068
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China
Abstract
Self-sweeping lasers is the simplest type of tunable laser source and have many advantages such as broad tuning range, narrow linewidth, and linear polarization state. However, a main drawback of the laser is the absence of wavelength control. In the present work, automatic control of the tuning parameters (sweeping rate and wavelength) is demonstrated using a Tm-doped fiber self-sweeping laser as an example. The method consists of measuring the laser wavelength, fast data processing to obtain the sweeping direction and the sweeping rate, and subsequent automatic adjustment of the pump power with a feedback loop and high-resolution equipment is not required. The automatic control will provide the possibility of performing more delicate measurements in the field of gas absorption spectroscopy.
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A. E. Budarnykh, I. A. Lobach, and N. N. Smolyaninov "Automatic control of the tuning parameters of a self-sweeping Tm-doped fiber laser", Proc. SPIE 11901, Advanced Sensor Systems and Applications XI, 119010M (9 October 2021); https://doi.org/10.1117/12.2602068
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KEYWORDS
Fiber lasers
Optical filters
Automatic control
Pulsed laser operation
Tunable lasers
Thulium
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