Tunable laser
Patent 3938058 Issued on February 10, 1976. Estimated Expiration Date: 
February 10, 1993. 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.
February 10, 1993. 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 3436678 3466565 InventorAssigneeApplicationNo. 454710 filed on 03/25/1974US Classes:372/20, Tuning359/247, Using reflective or cavity structure372/101, Lens or lens system372/102, Grating372/23, Producing plural wavelength output372/98Specified cavity componentExaminersPrimary: Webster, Robert J.Attorney, Agent or FirmForeign Application Priority Data1973-03-26 JAAbstractA tunable laser is disclosed in which a plurality of laser beams different from one another in wavelength and polarization can be simultaneously oscillated. The tunable laser is advantageous among others in that an atomic absorption spectroscopic analysis can be carried out with very high sensitivity when it is used as, for example, a light source for two-wavelength measurement in the atomic absorption spectroscopic analysis.Other References
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