Note: Demonstration of an external-cavity diode laser system immune to current and temperature fluctuations

Institute of Quantum Electronics, and State Key Laboratory of Advanced Optical Communication System & Network, School of Electronics Engineering & Computer Science, Peking University, Beijing, People's Republic of China.
The Review of scientific instruments (Impact Factor: 1.61). 08/2011; 82(8):086106. DOI: 10.1063/1.3624696
Source: PubMed


We demonstrate an external-cavity laser system using an anti-reflection coated laser diode as gain medium with about 60 nm fluorescence spectrum, and a Rb Faraday anomalous dispersion optical filter (FADOF) as frequency-selecting element with a transmission bandwidth of 1.3 GHz. With 6.4% optical feedback, a single stable longitudinal mode is obtained with a linewidth of 69 kHz. The wavelength of this laser is operating within the center of the highest transmission peak of FADOF over a diode current range from 55 mA to 142 mA and a diode temperature range from 15 °C to 35 °C, thus it is immune to the fluctuations of current and temperature.

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