Analysis of Detuned Second-Order Grating Output Couplers with an Integrated Superlattice Reflector

David Mehuys, Amos Hardy, David F. Welch, Robert G. Waarts, Ross Parke

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Analysis is presented of second-order gratings at wavelengths detuned from the reflection bandwidth. These gratings have applications, for example, as surface-emitting output couplers in monolithic integrated master oscillator power amplifier (M-MOPA) configurations. The grating output couplers have reflectivities below 104at an emission wavelength of 874 nm when the Bragg condition of the second-order grating occurs at 904 nm. When used in conjunction with a superlattice reflector integrated into the substrate, the surface emission can exceed 85% of the radiation incident on a 250 μm long grating. Consequently, these gratings will act as nearly ideal output couplers in a M-MOPA without introducing undesirable feedback to the amplifier or master oscillator.

Original languageEnglish
Pages (from-to)342-344
Number of pages3
JournalIEEE Photonics Technology Letters
Volume3
Issue number4
DOIs
StatePublished - Apr 1991
Externally publishedYes

Funding

FundersFunder number
U.S. Air Force

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