Patents by Inventor Neng H. Ching

Neng H. Ching has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Femtosecond laser pulse measuring system
    Patent number: 4681436
    Abstract: A system for measuring laser pulse durations in the range of ten nanoseconds to one femtosecond to an accuracy of one femtosecond, includes a primary pulse sampler, a ten component beam splitter array, optical delay lines whose settings are microprocessor controlled, a ten section interaction chamber with ten sets of ion detectors and a pulse envelope and pulse energy display monitors. The system has applications in chemistry, calibration of fast timing circuits and in the development of short pulse lasers.
    Type: Grant
    Filed: February 28, 1985
    Date of Patent: July 21, 1987
    Inventors: Neng H. Ching, Ralph G. Marson, Michael J. Norman, John L. Hughes