About this Research Topic
Narrow linewidth lasers are fundamental tools for the applications including atomic clocks, quantum computing, sensing, spectroscopy, gravitational wave detection and isotope separation. The gain advantages including spatial hole burning free, homogeneous profile and inherently dampening phase noise, make the stimulated scattering lasers promising for acquiring narrow linewidth outputs. Concurrently, the obvious advantage of stimulated scattering lasers is wavelength agility. Stimulated Raman and Brillouin lasers provide a convenient and efficient technology to address single frequency outputs with exceptional coherence and power. At present, single frequency Raman or Brillouin lasers have been demonstrated generating tens-of-watts output power and MHz or sub-MHz linewidth using crystalline materials or optical fiber. Thus, stimulated Raman or Brillouin represents an interesting laser source for applications requiring increased coherence and power and extending wavelength range.
Owing to its superiorities in terms of gain characteristics and wavelength expansibility, optical fiber and crystalline materials have been considered as efficient Raman or Brillouin gain media to produce narrow linewidth output with high power. However, the continuous output power from single frequency Raman or Brillouin crystalline laser was reported to be on the order of only few tens of watts and that of only hundred watts for single frequency Raman fiber laser. For example, the highest continuous output power from a single frequency diamond Raman laser has been achieved to be 22 W, whereas diamond crystal is considered as a promising Raman material to produce single frequency output with extremely high power (such as multi-kilowatts) due to its advantages of gain characteristics and heat handling capacity. Additionally, the single frequency Raman or Brillouin laser properties such as frequency stability, linewidth limitation and noise analysis are relatively lacking in experimental and theoretical investigations. Thus, this Research Topic aims to seek research papers to investigate the power potentials of narrow linewidth Raman and Brillouin lasers and deal with the numerous challenges in terms of spectral broadening, single frequency instability, intensity and frequency noise, thermal lensing, beam deterioration and so on.
Areas to be covered in this Research Topic may include, but are not limited to:
• Raman lasers
• Brillouin lasers
• Narrow linewidth laser
• Stimulated scattering materials
• Stimulated scattering theory
• Narrow linewidth laser applications
• Crystal thermal analysis
• Noise analysis on stimulated scattering lasers
Owing to its superiorities in terms of gain characteristics and wavelength expansibility, optical fiber and crystalline materials have been considered as efficient Raman or Brillouin gain media to produce narrow linewidth output with high power. However, the continuous output power from single frequency Raman or Brillouin crystalline laser was reported to be on the order of only few tens of watts and that of only hundred watts for single frequency Raman fiber laser. For example, the highest continuous output power from a single frequency diamond Raman laser has been achieved to be 22 W, whereas diamond crystal is considered as a promising Raman material to produce single frequency output with extremely high power (such as multi-kilowatts) due to its advantages of gain characteristics and heat handling capacity. Additionally, the single frequency Raman or Brillouin laser properties such as frequency stability, linewidth limitation and noise analysis are relatively lacking in experimental and theoretical investigations. Thus, this Research Topic aims to seek research papers to investigate the power potentials of narrow linewidth Raman and Brillouin lasers and deal with the numerous challenges in terms of spectral broadening, single frequency instability, intensity and frequency noise, thermal lensing, beam deterioration and so on.
Areas to be covered in this Research Topic may include, but are not limited to:
• Raman lasers
• Brillouin lasers
• Narrow linewidth laser
• Stimulated scattering materials
• Stimulated scattering theory
• Narrow linewidth laser applications
• Crystal thermal analysis
• Noise analysis on stimulated scattering lasers
Keywords: Narrow-linewidth lasers, Raman lasers, Brillouin lasers, Diamond, Power scaling, Single frequency lasers
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