Title :
Frequency noise measurement of diode-pumped Nd:YAG ring lasers
Author :
Chen, Chien-Chung ; Win, Moe Zaw
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
The combined frequency noise spectrum of two lightwave Model 120-01A nonplanar ring oscillator lasers was measured by first heterodyne detecting the IF signal and then measuring the IF frequency noise using an RF frequency discriminator. The results indicated the presence of a 1/f/sup 2/ noise component in the power spectral density of the frequency fluctuations between 1 Hz and 1 kHz. After incorporating this 1/f/sup 2/ into the analysis of the optical phase tracking loop, the measured phase error variance closely matches the theoretical predictions.<>
Keywords :
frequency measurement; laser variables measurement; neodymium; optical pumping; ring lasers; solid lasers; 1 Hz to 1 kHz; 1/f/sup 2/ noise component; IF frequency noise; IF signal; Model 120-01A nonplanar ring oscillator lasers; RF frequency discriminator; YAG:Nd; YAl5O12:Nd; combined frequency noise spectrum; diode-pumped Nd:YAG ring lasers; frequency fluctuations; frequency noise measurement; heterodyne detecting; optical phase tracking loop; phase error variance; power spectral density; Diodes; Frequency measurement; Laser modes; Laser noise; Noise measurement; Optical noise; RF signals; Ring lasers; Ring oscillators; Signal detection;
Journal_Title :
Photonics Technology Letters, IEEE
