Incoherent aperture beam combining of quantum cascade lasers

Katrin Dahl; Michael Raab; Hans Dieter Tholl

doi:10.1117/12.2066166

7 October 2014 Incoherent aperture beam combining of quantum cascade lasers

Katrin Dahl, Michael Raab, Hans Dieter Tholl

Proceedings Volume 9251, Technologies for Optical Countermeasures XI; and High-Power Lasers 2014: Technology and Systems; 925109 (2014) https://doi.org/10.1117/12.2066166
Event: SPIE Security + Defence, 2014, Amsterdam, Netherlands

Abstract

Quantum cascade lasers can be designed to emit at any desired wavelength in the mid-infrared. When the optical output power of a single quantum cascade laser is too low, the beams of different lasers can be combined, e.g. by incoherent aperture beam combining. For incoherent aperture beam combining the laser beams are arranged side by side on the aperture of the (multi-) laser system and combine in the far field. The technique is neither limited to any number of lasers nor to any laser characteristics. We investigated incoherent aperture beam combining of quantum cascade laser beams in experiment and simulations at different distances from the laser aperture. We present results of combining laser sources of different wavelengths and demonstrate advantages of various beam arrangements.

Citation Download Citation

Katrin Dahl, Michael Raab, and Hans Dieter Tholl "Incoherent aperture beam combining of quantum cascade lasers", Proc. SPIE 9251, Technologies for Optical Countermeasures XI; and High-Power Lasers 2014: Technology and Systems, 925109 (7 October 2014); https://doi.org/10.1117/12.2066166

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available