Metrological-grade terahertz frequency combs

被引：0
|
作者：
Riccardi, Elisa [1 ,2 ]
Pistore, Valentino [1 ,2 ]
Consolino, Luigi [3 ,4 ]
Sorgi, Alessia [3 ,4 ]
Cappelli, Francesco [3 ,4 ]
Eramo, Roberto [3 ,4 ]
De Natale, Paolo [3 ,4 ]
Li, Lianhe [5 ]
Davies, A. Giles [5 ]
Linfield, Edmund H. [5 ]
Vitiello, Miriam S. [1 ,2 ]
机构：
[1] CNR Ist Nanosci, NEST, Piazza San Silvestro 12, I-56127 Pisa, Italy
[2] Scuola Normale Super Pisa, Piazza San Silvestro 12, I-56127 Pisa, Italy
[3] CNR Ist Nazl Ott, Sesto Fiorentino, Italy
[4] European Lab Non Linear Spect, Sesto Fiorentino, Italy
[5] Univ Leeds, Sch Elect & Elect Engn, Leeds LS2 9JT, W Yorkshire, England
来源：
2022 47TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ 2022) | 2022年
关键词：
D O I：
10.1109/IRMMW-THz50927.2022.9895713
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Metrological-grade frequency comb (FC) synthesizers are the ideal sources for quantum applications. At terahertz (THz) frequencies, electrically pumped quantum cascade lasers (QCLs) have shown quantum-limited frequency noise operation, phase/frequency absolute referencing and self-starting FC operation, albeit over a rather restricted dynamic range. Here, we conceive a technological approach to achieve FC operation over the entire available gain bandwidth and across almost the whole lasing regime at THz frequencies, by increasing the mirror losses of its Fabry-Perot cavity through coating the back facet with an epitaxially-grown multilayer graphene film.
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页数：2
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