Intracavity terahertz generation from gallium arsenide in a fiber laser pumped type 0 doubly resonant optical parametric oscillator

Walter C. Hurlbut; Vladimir G. Kozlov; Patrick Tekavec; Konstantin Vodopyanov

doi:10.1117/12.883561

25 May 2011 Intracavity terahertz generation from gallium arsenide in a fiber laser pumped type 0 doubly resonant optical parametric oscillator

Walter C. Hurlbut, Vladimir G. Kozlov, Patrick Tekavec, Konstantin Vodopyanov

Author Affiliations +

Proceedings Volume 8023, Terahertz Physics, Devices, and Systems V: Advance Applications in Industry and Defense; 80230K (2011) https://doi.org/10.1117/12.883561
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

Resonant cavity enhancement results in substantial improvement in the efficiency of photonic THz-wave generation via frequency down conversion. Efficient THz wave generation was demonstrated at 2.8 THz previously by difference frequency mixing between resonating signal and idler waves of the linear-cavity type-II-phase-matched PPLN optical parametric oscillator (OPO). A new, simplified approach to resonantly-enhanced THz-wave generation in periodic GaAs, featuring (i) ring, instead of linear, OPO cavity with much higher finesse, (ii) type-0, instead of type-II-phase-matched PPLN crystal as a gain medium, resulting in much lower OPO threshold, (iii) a compact picosecond 1064-nm fiber laser as a pump source, and (iv) the use of a thin intracavity etalon with a free spectral range equal to the desired THz output frequency is presented here. Intra-cavity THz generation was performed by 2.1 μm anti-reflection coated stacks of optically contacted GaAs wafers (OC-GaAs) and diffusion bonded GaAs wafers (DB-GaAs) with periodic-inversion placed in the second OPO focal plane. Using 6.6 W of average pump power, narrowband output in the range 1.4 - 3 THz was produced with more than 130 microwatts of average power at 1.5 THz. By optimizing the OPO PPLN crystal length and spectral characteristics of the fiber pump laser and OPO the demonstrated approach can be extended to generate 1-10 mW of THz output in a compact setup.

Citation Download Citation

Walter C. Hurlbut, Vladimir G. Kozlov, Patrick Tekavec, and Konstantin Vodopyanov "Intracavity terahertz generation from gallium arsenide in a fiber laser pumped type 0 doubly resonant optical parametric oscillator", Proc. SPIE 8023, Terahertz Physics, Devices, and Systems V: Advance Applications in Industry and Defense, 80230K (25 May 2011); https://doi.org/10.1117/12.883561

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