Accession Number : AD0607852

Title :   TUNING OF CW LASERS OVER ANGSTROM BANDWIDTHS: SOME POSSIBLE APPROACHES.

Descriptive Note : Technical rept. for Jun 63-Jun 64,

Corporate Author : STANFORD UNIV CALIF STANFORD ELECTRONICS LABS

Personal Author(s) : Morris,R. J.

Report Date : AUG 1964

Pagination or Media Count : 62

Abstract : This report is an investigation of several approaches to the problem of obtaining cw coherent optical signals whose wavelength can be scanned in a controlled fashion over a range of approximately 1 A or more. The methods discussed include the following internal tuning methods: Zeeman tuning; diffraction from acoustic waves; crystalstrain tuning; thermal tuning; tunable mode selection in wide lines; and Doppler-shift tuning using a beam of accelerated particles. The last method listed is believed to be a novel scheme for laser tuning. Frequency modulation using microwave frequencies and large modulation indices is also discussed as an external tuning method. Of all the approaches, it is probably the one that will provide the simplest and most effective solution. (Author)

Descriptors :   (*LASERS, TUNED AMPLIFIERS), (*TUNED AMPLIFIERS, LASERS), TUNING DEVICES, SIGNALS, FREQUENCY SHIFT, DIFFRACTION, SOUND, CRYSTALS, MAGNETIC FIELDS, DOPPLER EFFECT, TEMPERATURE, PARTICLE BEAMS, FREQUENCY MODULATION, MICROWAVE FREQUENCY

Distribution Statement : APPROVED FOR PUBLIC RELEASE