Title :
30 Hz-linewidth, diode-laser-pumped, Nd:GGG nonplanar ring oscillators by active frequency stabilisation
Author :
Day, T. ; Nilsson, A.C. ; Farinas, A.D. ; Gustafson, E.K. ; Byer, Robert L.
Author_Institution :
Edward L. Ginzton Lab., Stanford Univ., CA, USA
fDate :
6/22/1989 12:00:00 AM
Abstract :
Reports a heterodyne linewidth of less than 30 Hz for the beatnote between the outputs of two 282 THz (1.062 mu m) Nd:GGG nonplanar ring oscillators (NPROs). The lasers were independently locked to adjacent axial modes of a high-finesse interferometer. The remnant frequency noise appears to be dominated by free spectra range fluctuations in the reference interferometer rather than by residual laser noise.
Keywords :
frequency control; laser frequency stability; neodymium; optical pumping; oscillators; ring lasers; solid lasers; 1.062 micron; 282 THz; 30 Hz; GdGG:Nd ring lasers; GdGa5O12:Nd; Nd:GG lasers; active frequency stabilisation; beatnote; diode-laser-pumped; free spectra range fluctuations; garnets; heterodyne linewidth; high-finesse interferometer; laser frequency locking; locked to adjacent axial modes; nonplanar ring oscillators; reference interferometer; remnant frequency noise;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19890545
