Title :
Frequency instability in Er/Yb fiber grating lasers due to heating by nonradiative transitions
Author :
Man, W.S. ; Xu, Y.Z. ; Tam, H.Y. ; Demokan, M.S.
Author_Institution :
Dept. of Electr. Eng., Hong Kong Polytech., Kowloon, Hong Kong
Abstract :
Heating of the Er/Yb-codoped fiber lasers due to strong pump absorption was found to cause large frequency fluctuation in addition to lasing wavelength shift. Laser frequency fluctuation of up to 1.7 GHz was measured by using an absorption line of an acetylene gas cell. The large frequency fluctuation was reduced to less than 80 MHz with proper cooling of the laser.
Keywords :
diffraction gratings; erbium; fibre lasers; fluctuations; laser frequency stability; laser transitions; optical pumping; ytterbium; 1.7 GHz; Er/Yb fiber grating lasers; Er/Yb-codoped fiber lasers; absorption line; acetylene gas cell; frequency instability; large frequency fluctuation; lasing wavelength shift; nonradiative transition heating; proper laser cooling; strong pump absorption; Absorption; Erbium; Fiber gratings; Fiber lasers; Fluctuations; Frequency; Gas lasers; Heat pumps; Heating; Pump lasers;
Journal_Title :
Photonics Technology Letters, IEEE
