Abstract

A p-Ge laser operating at submillimeter wavelengths in Voigt configuration using a regular permanent magnet. The invention is improvement over prior art Ge Lasers which use superconducting magnets that require liquid helium to cool the magnets along with the Ge crystal. Although the subject invention requires cooling(refrigerant) of the Ge crystal itself, it does not need liquid helium. The permanent magnet can be Nd.sub.2 Fe.sub.14 B. The emissions using the novel invention were observed over a wider range of electric-field magnitude in Voigt configuration at a given magnetic field as compared to that of the prior system. The free space beam profile of the subject invention is Gaussian. The emission-strength of the subject invention is sufficient between 4 and 10K that a closed-cycle refrigerator can be used to cool the crystal rather than the liquid helium used in all prior p-Ge lasers. The open architecture of the permanent magnet facilitates use of cooling fins/heat sinks, which ar

Document Type

Patent

Patent Number

US 5,784,397

Application Serial Number

08/558,440

Issue Date

7-21-1998

Current Assignee

UCFRF

Assignee at Issuance

UCFRF

College

College of Sciences

Department

Physics

Allowance Date

2-10-1998

Filing Date

11-15-1995

Assignee at Filing

UCFRF

Filing Type

Nonprovisional Application Record

Donated

no

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