Abstract
We present a monolithic dual-wavelength DFB laser designed for terahertz applications. This laser achieves an optical power of up to 144.41 mW with a low threshold current of 16.2 mA. The power difference between the two primary modes is maintained within 1 dB, while each mode exhibits a side-mode suppression ratio exceeding 35 dB, ensuring stable dual-wavelength operation. Additionally, the laser exhibits a low-frequency noise floor of 2.81 × 10⁻⁴ and 2.15 × 10⁴ Hz²/Hz for the longer and shorter wavelengths, respectively. These results underscore the potential of the dual-wavelength DFB laser as a compact and efficient solution for terahertz systems.
C. -H. Wu
National Taiwan University
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2B.4 – Monolithic Dual-Wavelength DFB Laser with Over 140 mW Optical Power and Frequency Noise Floor Below 2.15 × 10⁴ Hz²/Hz for High-Precision THz Systems
Te-Hua Liu, National Taiwan UniversityY.-Y Tu, National Taiwan UniversityC. -H. Wu, National Taiwan UniversityY. -H Lu, National Taiwan University