Nearly Self-Similar Pulse Compression in Horizontally Slotted Waveguides at 2.0 μm
The picosecond pulse can be directly generated in the integrated mode-locked laser, which reduces the size of light source to the optical chip. However, it is still a challenge to directly generate femtosecond pulses in the integrated scheme. In this work, we theoretically propose nearly self-simila...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2024-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10517364/ |
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| Summary: | The picosecond pulse can be directly generated in the integrated mode-locked laser, which reduces the size of light source to the optical chip. However, it is still a challenge to directly generate femtosecond pulses in the integrated scheme. In this work, we theoretically propose nearly self-similar pulse compression in the silicon/silicon nitride horizontally slotted waveguides (Si-Si<sub>3</sub>N<sub>4</sub> HSWs) that the femtosecond pulse can be acquired without assistance by active components. Our scheme consists of the single pulse compression, high-repetition-rate pulse train compression and two pulses combination and compression. For the single pulse compression, the input pulse can be compressed from 1 ps to 82.6 fs with a remarkable compression factor of 12.11. Moreover, we present a favorable approach of pulse parameter equations (PPEs), which provides the theoretical results in much shorter calculation time. Furthermore, we achieve the higher-peak-power pulse train compression and two pulses combination and compression in the same Si-Si<sub>3</sub>N<sub>4</sub> HSWs, which accompanies with an impressive compression factor of 30.56 and 4.97. Eventually, self-similar pulse compression provides valid guidance for the integrated pulse compressor in the experimental endeavors. |
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| ISSN: | 1943-0655 |