Passive and hybrid mode locking in multi-section terahertz quantum cascade lasers

Download statistics - Document (COUNTER):

Tzenov, P.; Babushkin, I.; Arkhipov, R.; Arkhipov, M.; Rosanov, N. et al.: Passive and hybrid mode locking in multi-section terahertz quantum cascade lasers. In: New Journal of Physics 20 (2018), Nr. 5, 53055. DOI: https://doi.org/10.1088/1367-2630/aac12a

Repository version

To cite the version in the repository, please use this identifier: https://doi.org/10.15488/3796

Selected time period:

year: 
month: 

Sum total of downloads: 103




Thumbnail
Abstract: 
It is believed that passive mode locking is virtually impossible in quantum cascade lasers (QCLs) because of too fast carrier relaxation time. Here, we revisit this possibility and theoretically show that stable mode locking and pulse durations in the few cycle regime at terahertz (THz) frequencies are possible in suitably engineered bound-to-continuum QCLs. We achieve this by utilizing a multi-section cavity geometry with alternating gain and absorber sections. The critical ingredients are the very strong coupling of the absorber to both field and environment as well as a fast absorber carrier recovery dynamics. Under these conditions, even if the gain relaxation time is several times faster than the cavity round trip time, generation of few-cycle pulses is feasible. We investigate three different approaches for ultrashort pulse generation via THz quantum cascade lasers, namely passive, hybrid and colliding pulse mode locking.
License of this version: CC BY 3.0 Unported
Document Type: article
Publishing status: publishedVersion
Issue Date: 2018
Appears in Collections:Fakultät für Mathematik und Physik

distribution of downloads over the selected time period:

downloads by country:

pos. country downloads
total perc.
1 image of flag of Germany Germany 86 83.50%
2 image of flag of Moldova, Republic of Moldova, Republic of 2 1.94%
3 image of flag of United Kingdom United Kingdom 2 1.94%
4 image of flag of China China 2 1.94%
5 image of flag of Ukraine Ukraine 1 0.97%
6 image of flag of Slovakia Slovakia 1 0.97%
7 image of flag of Sweden Sweden 1 0.97%
8 image of flag of Saudi Arabia Saudi Arabia 1 0.97%
9 image of flag of Netherlands Netherlands 1 0.97%
10 image of flag of Korea, Republic of Korea, Republic of 1 0.97%
    other countries 5 4.85%

Further download figures and rankings:


Hinweis

Zur Erhebung der Downloadstatistiken kommen entsprechend dem „COUNTER Code of Practice for e-Resources“ international anerkannte Regeln und Normen zur Anwendung. COUNTER ist eine internationale Non-Profit-Organisation, in der Bibliotheksverbände, Datenbankanbieter und Verlage gemeinsam an Standards zur Erhebung, Speicherung und Verarbeitung von Nutzungsdaten elektronischer Ressourcen arbeiten, welche so Objektivität und Vergleichbarkeit gewährleisten sollen. Es werden hierbei ausschließlich Zugriffe auf die entsprechenden Volltexte ausgewertet, keine Aufrufe der Website an sich.

Search the repository


Browse