Laser light source device
Patent 4637027 Issued on January 13, 1987. Estimated Expiration Date: 
September 26, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 26, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3356438 3436677 3639855 Selective optical resonator TMO and TEO cavity resonator for projecting plasma confining TEO mode components Patent #: 4496518 InventorsApplicationNo. 06/654628 filed on 09/26/1984US Classes:372/27, Polarization372/23, Producing plural wavelength output372/37, HAVING AN APPLIED MAGNETIC FIELD372/64, Waveguide372/9, PARTICULAR BEAM CONTROL DEVICE372/97Plural cavitiesExaminersPrimary: Scott, Leon Jr.Attorney, Agent or FirmInternational ClassesH01S 5/14 (20060101)G01R 33/032 (20060101) H01S 5/00 (20060101) H01S 3/106 (20060101) Foreign Application Priority Data1983-09-26 JPAbstractDisclosed is a laser light source device having a laser and an external resonator, wherein as a base, a Faraday rotator is provided at the laser side front of a reflection plane of the resonator so that clockwise and counter-clockwise circular polarizations which have frequencies slightly different to each other are generated, and if a laser such as a semiconductor laser having an eigen-mode having a linear polarization is applied, elements which rotate a polarization by 90 degrees by one emission-and-return through the element, for example, quarter-wave plates, are arranged, The device does not need a strong magnetic field or a strong electric field, and can easily generate lights which are a constant strength. Thus the device can be miniaturized and a high efficiency obtained. | |
