Y-shaped tunable monolithic dual colour lasers for THz technology

Brenner, Carsten; Surkamp, Nils; Hofmann, Martin Rudolf

doi:10.5194/ars-21-1-2023

Adv. Radio Sci.

2023

DOI: 10.5194/ars-21-1-2023

|View full text |Cite

Y-shaped tunable monolithic dual colour lasers for THz technology

Carsten Brenner,

Nils Surkamp,

Martin Rudolf Hofmann

Abstract: Abstract. THz generation by difference frequency generation can be accomplished by many different laser systems. The most cost efficient and compact solution will be monolithic dual-colour lasers. Application of these lasers in THz metrology can suffer from several drawbacks like coupling between the modes, strong amplitude variations, low tuning capabilities, or a complicated growth process. We discuss the impact of these points for THz measurements and present a simple monolithic dual colour laser which can … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2023

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Long-term studies of the summer wind in the mesosphere and lower thermosphere at middle and high latitudes over Europe

Jaen,

Renkwitz,

Liu

et al. 2023

Atmos. Chem. Phys.

View full text Add to dashboard Cite

Abstract. Continuous wind measurements using partial-reflection radars and specular meteor radars have been carried out for nearly 2 decades (2004–2022) at middle and high latitudes over Germany (∼ 54∘ N) and northern Norway (∼ 69∘ N), respectively. They provide crucial data for understanding the long-term behavior of winds in the mesosphere and lower thermosphere. Our investigation focuses on the summer season, characterized by the low energy contribution from tides and relatively stable stratospheric conditions. This work presents the long-term behavior, variability, and trends of the maximum velocity of the summer eastward, westward, and southward winds. In addition, the geomagnetic influence on the summer zonal and meridional wind is explored at middle and high latitudes. The results show a mesospheric westward summer maximum located around 75 km with velocities of 35–54 m s−1, while the lower-thermospheric eastward wind maximum is observed at ∼ 97 km with wind speeds of 25–40 m s−1. A weaker southward wind peak is found around 86 km, ranging from 9 to 16 m s−1. The findings indicate significant trends at middle latitudes in the westward summer maxima with increasing winds over the past decades, while the southward winds show a decreasing trend. On the other hand, only the eastward wind in July has a decreasing trend at high latitudes. Evidence of oscillations around 2–3, 4, and 6 years modulate the maximum velocity of the summer winds. In particular, a periodicity between 10.2 and 11.3 years found in the westward component is more significant at middle latitudes than at high latitudes, possibly due to solar radiation. Furthermore, stronger geomagnetic activity at high latitudes causes an increase in eastward wind velocity, whereas the opposite effect is observed in zonal jets at middle latitudes. The meridional component appears to be disturbed during high geomagnetic activity, with a notable decrease in the northward wind strength below approximately 80 km at both latitudes.

show abstract

Long-term studies of the summer wind in the mesosphere and lower thermosphere at middle and high latitudes over Europe

Jaen,

Renkwitz,

Liu

et al. 2023

Atmos. Chem. Phys.

View full text Add to dashboard Cite

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Y-shaped tunable monolithic dual colour lasers for THz technology

Cited by 1 publication

References 20 publications

Long-term studies of the summer wind in the mesosphere and lower thermosphere at middle and high latitudes over Europe

Long-term studies of the summer wind in the mesosphere and lower thermosphere at middle and high latitudes over Europe

Contact Info

Product

Resources

About