This paper will present developments in narrow-linewidth semiconductor-disk-laser systems using novel frequency-stabilisation schemes for reduced sensitivity to mechanical vibrations, a critical requirement for mobile applications. Narrow-linewidth single-frequency lasers are required for a range of applications including metrology and high-resolution spectroscopy. Stabilisation of the laser was achieved using a monolithic fibre-optic ring resonator with free spectral range of 181 MHz and finesse of 52 to act as passive reference cavity for the laser. Such a cavity can operate over a broad wavelength range and is immune to a wide band of vibrational frequency noise due to its monolithic implementation. The frequency noise of the locked system has been measured and compared to typical Fabry-Perot-locked lasers using vibration equipment to simulate harsh environments, and analysed here. Locked linewidths of < 40 kHz have been achieved. These developments offer a portable, narrow-linewidth laser system for harsh environments that can be flexibly designed for a range of applications.
|Number of pages||8|
|Journal||Proceedings of SPIE|
|Publication status||Published - 15 Feb 2018|
|Event||SPIE Photonics West 2018: OPTO - The Moscone Center, San Francisco, United States|
Duration: 27 Jan 2018 → 1 Feb 2018
Hunter, C. R., Jones, B. E., Schlosser, P., Sørensen, S. T., Strain, M. J., & McKnight, L. J. (2018). Vibration-tolerant narrow-linewidth semiconductor disk laser using novel frequency-stabilisation schemes. Proceedings of SPIE, 10515, [105150Q]. https://doi.org/10.1117/12.2286063