Infrared and Optical Masers
Abstract
The extension of maser techniques to the infrared and optical region is considered. It is shown that by using a resonant cavity of centimeter dimensions, having many resonant modes, maser oscillation at these wavelengths can be achieved by pumping with reasonable amounts of incoherent light. For wavelengths much shorter than those of the ultraviolet region, maser-type amplification appears to be quite impractical. Although use of a multimode cavity is suggested, a single mode may be selected by making only the end walls highly reflecting, and defining a suitably small angular aperture. Then extremely monochromatic and coherent light is produced. The design principles are illustrated by reference to a system using potassium vapor.
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In a CW laser, the FWHM is expected to narrow with increasing pump power due to gain saturation by the lasing mode.
“In a CW laser the FWHM is expected to narrow with increasing pump power due to gain saturation by the lasing mode 37”
From Monolithically Integrated Perovskite Semiconductor Lasers on Silicon Photonic Chips by Scalable Top-Down Fabrication (2018) · cites this paper as [37]
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- Authors
- Schawlow, A. L., & Townes, C. H.
- Venue
- Physical Review
- Publisher
- American Physical Society (APS)
- Published
- 1958-12-15
- Volume
- 112
- Issue
- 6
- Pages
- 1940-1949
- ISSN
- 0031-899X (ISSN-L)
- OpenAlex
- W2531441221
- Cited by
- 2,354
- References
- 0
- Citations by year
- 2026: 59 · 2025: 75 · 2024: 78 · 2023: 94 · 2022: 88 · 2021: 88 · 2020: 75 · 2019: 99 · 2018: 75 · 2017: 58 · 2016: 59 · 2015: 74 · 2014: 48 · 2013: 50 · 2012: 71
- FWCI
- 48.57
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Physical Review (publishedVersion)
- Quantum Electronics
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Laser Design and Applications
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum optics and atomic interactions
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Solid State Laser Technologies
- Keywords
- optical masers, laser amplification, incoherent pumping, single-mode operation, coherent light generation, cavity design
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