Journal
IEEE ACCESS
Volume 11, Issue -, Pages 69965-69970Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2023.3292157
Keywords
Optical parametric oscillator; periodically poled; silicon nitride; optical frequency conversion; infrared
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This paper presents a novel design of optical parametric oscillators (OPOs) based on all-optical poled silicon nitride, which allows for adjustable poling period. The output characteristics of the OPO are investigated in three different modes, and the ranges of output wavelengths are obtained under various pump and poling fundamental wave conditions. This new OPO design offers enhanced flexibility for efficient mid-infrared laser generation.
Quasi-phase matching optical parametric oscillators (OPOs) are widely used for mid-infrared laser generation. However, the traditional OPO bulk material using high voltage electric field poling limits the flexibility of the poling period. In this paper, we propose a novel OPO design based on all-optical poled silicon nitride, allowing for adjustable poling period. Two OPO design schemes are presented, each offering unique advantages in terms of operational characteristics and performance. The output characteristics of the OPO are investigated in three modes: OPO pump tuning, poling fundamental wave (PFW) tuning, and OPO pump tuning and PFW tuning with the same laser. For OPO pump tuning, the OPO achieves output wavelengths of 3.319-5.265 mu m and 2.225-3.769 mu m with PFW wavelengths of 1450 nm and 1700 nm. For PFW tuning, the OPO produces output wavelengths of 5.502-3.722 mu m and 5.497-3.577 mu m using OPO pump wavelengths of 1310 nm and 1654 nm, respectively. Furthermore, for OPO pump tuning and PFW tuning with the same laser, the OPO generates output wavelengths ranging from 5.504 mu m to 3.941 mu m with OPO pump and PFW wavelengths ranging from 1.420 mu m to 1.610 mu m. This new OPO design offers enhanced flexibility in controlling the poling period for efficient mid-infrared laser generation.
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