A Multiple-Selected-Line Unstable Resonator.
Abstract
A new type of unstable resonator has been developed that permits multiple-selected-line operation. Selected-line operation is obtained with a diffraction grating oriented at an angle different from the Littrow angle. Secondary feedback mirrors at the appropriate angles provide an independent three-element cavity for each wavelength selected. Two types of multiple-selected-line unstable resonators are considered: (1) an edge-coupled design, which produces an annular beam with a 45-deg output coupling mirror, and (2) a continuously coupled design, which uses the primary zero-order beam as output. Experiments have been carried out with a multiple-selected-line unstable resonator on a CW HF laser. Selected-line operation was obtained on the P2 and P1 HF transitions in a continuously coupled design.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 1974
- Accession Number
- ADA004072
Entities
People
- Richard A. Chodzko
Organizations
- The Aerospace Corporation