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    • 53. 发明公开
    • WAVELENGTH CONTROL OF LASER DIODES
    • WENENLÄNGENSTEUERUNGVON LASERDIODEN
    • EP3132511A1
    • 2017-02-22
    • EP15717211.5
    • 2015-04-09
    • Cranfield University
    • HODGKINSON, Elizabeth JaneTATAM, Ralph PeterASMARI, Abdullah Shah
    • H01S5/024H01S5/068
    • H01S5/06808G01N21/27G01N21/39G01N33/0047G01N2021/399G01N2201/062H01S5/02415H01S5/06804
    • This invention generally relates to a method of controlling emission wavelength of a light emitting device, and a system for wavelength control of a light emitting device, for example for wavelength stabilisation of a laser diode. One method of controlling emission wavelength of a light emitting device comprises: determining an indication of series resistance of the device, the series resistance comprising ohmic resistance of the device; providing a current through the device to maintain light emission of the device; measuring a forward voltage of the device during said light emission, the forward voltage being across an impedance comprising impedance of an active region of the device and the series resistance; determining an indicator of active region voltage on the basis of the measured forward voltage and the determined indicator of series resistance; and controlling a temperature of the device on the basis of the determined indicator of active region voltage.
    • 本发明一般涉及一种控制发光器件的发射波长的方法和用于发光器件的波长控制的系统,例如用于激光二极管的波长稳定。 控制发光器件的发射波长的一种方法包括:确定器件的串联电阻的指示,串联电阻包括器件的欧姆电阻; 提供通过该装置的电流以维持装置的发光; 在所述发光期间测量所述器件的正向电压,所述正向电压跨过包括所述器件的有源区域的阻抗和所述串联电阻的阻抗; 基于所测量的正向电压和确定的串联电阻指示器确定有源区电压的指示; 以及基于所确定的有源区电压的指示器来控制所述装置的温度。