DOAJ Open Access 2023

Phase-matching in terahertz quantum cascade laser sources based on Cherenkov difference-frequency mixing

Wolfhard Oberhausen Iaroslav Lubianskii Gerhard Boehm Axel Strömberg Balaji Manavaimaran +3 lainnya

Abstrak

Terahertz quantum cascade laser sources based on intra-cavity Cherenkov difference-frequency generation in dual-wavelength mid-infrared quantum cascade lasers are currently the only monolithic semiconductor laser technology that can deliver continuous-wave coherent terahertz output at room temperature. Because the Cherenkov difference-frequency generation process enables terahertz radiation generation and extraction across a wide range of frequencies, it is often assumed that phase-matching conditions for this process are automatically fulfilled. We theoretically analyze and experimentally demonstrate that phase-matching plays an important role in these devices, and significant improvements in terahertz power output can be achieved by adjusting the waveguide configuration of the quantum cascade lasers to provide better phase-matching.

Topik & Kata Kunci

Applied optics. Photonics

Penulis (8)

Wolfhard Oberhausen

Iaroslav Lubianskii

Gerhard Boehm

Axel Strömberg

Balaji Manavaimaran

Dominik Burghart

Yan-Ting Sun

Mikhail A. Belkin

Format Sitasi

APA MLA BibTeX

Oberhausen, W., Lubianskii, I., Boehm, G., Strömberg, A., Manavaimaran, B., Burghart, D. et al. (2023). Phase-matching in terahertz quantum cascade laser sources based on Cherenkov difference-frequency mixing. https://doi.org/10.1063/5.0162071

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Informasi Jurnal

Tahun Terbit: 2023
Sumber Database: DOAJ
DOI: 10.1063/5.0162071
Akses: Open Access ✓