![1.95 μm kHz-linewidth single-frequency fiber laser using self-developed heavily Tm3+-doped germanate glass fiber. | Semantic Scholar 1.95 μm kHz-linewidth single-frequency fiber laser using self-developed heavily Tm3+-doped germanate glass fiber. | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/24cb541b0395900029da3a34b2cd7604a6e58a81/4-Figure2-1.png)
1.95 μm kHz-linewidth single-frequency fiber laser using self-developed heavily Tm3+-doped germanate glass fiber. | Semantic Scholar
![Wholesale kHz 1.5µm Narrow Linewidth Single Frequency Fiber Laser Manufacturer and Supplier | Techwin Wholesale kHz 1.5µm Narrow Linewidth Single Frequency Fiber Laser Manufacturer and Supplier | Techwin](https://www.sensing-laser.com/uploads/1_2_1_narrow_linewidth_single_frequency_01.jpg)
Wholesale kHz 1.5µm Narrow Linewidth Single Frequency Fiber Laser Manufacturer and Supplier | Techwin
![Long-pulse, single-frequency 1064 nm laser and frequency doubling | High Power Laser Science and Engineering | Cambridge Core Long-pulse, single-frequency 1064 nm laser and frequency doubling | High Power Laser Science and Engineering | Cambridge Core](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20191009104818994-0401:S2095471915000225:S2095471915000225_fig1g.gif?pub-status=live)
Long-pulse, single-frequency 1064 nm laser and frequency doubling | High Power Laser Science and Engineering | Cambridge Core
![Single-frequency lasers, explained by RP Photonics Encyclopedia; single-wavelength laser, resonator mode, narrow linewidth Single-frequency lasers, explained by RP Photonics Encyclopedia; single-wavelength laser, resonator mode, narrow linewidth](https://www.rp-photonics.com/previews/single_frequency_lasers.png)
Single-frequency lasers, explained by RP Photonics Encyclopedia; single-wavelength laser, resonator mode, narrow linewidth
Single frequency fiber laser based on an ultrathin metal–organic framework - Journal of Materials Chemistry C (RSC Publishing)
Single frequency fiber laser base on MXene with kHz linewidth - Journal of Materials Chemistry C (RSC Publishing)
![Single-mode operation, explained by RP Photonics Encyclopedia; single-frequency lasers, diffraction-limited Single-mode operation, explained by RP Photonics Encyclopedia; single-frequency lasers, diffraction-limited](https://www.rp-photonics.com/img/laser_spectra.png)
Single-mode operation, explained by RP Photonics Encyclopedia; single-frequency lasers, diffraction-limited
![Fiber Ring Laser Generates 1 W in a Single Frequency in Eye-Safe Region | Jun 2005 | Photonics Spectra Fiber Ring Laser Generates 1 W in a Single Frequency in Eye-Safe Region | Jun 2005 | Photonics Spectra](https://www.photonics.com/images/Web/Articles/2005/6/1/ResRing1.gif)
Fiber Ring Laser Generates 1 W in a Single Frequency in Eye-Safe Region | Jun 2005 | Photonics Spectra
![Frontiers | Recent Advance in Tunable Single-Frequency Fiber Laser Based on Two-Dimensional Materials | Physics Frontiers | Recent Advance in Tunable Single-Frequency Fiber Laser Based on Two-Dimensional Materials | Physics](https://www.frontiersin.org/files/Articles/580602/fphy-08-580602-HTML/image_m/fphy-08-580602-g011.jpg)
Frontiers | Recent Advance in Tunable Single-Frequency Fiber Laser Based on Two-Dimensional Materials | Physics
![Applied Sciences | Free Full-Text | High-Power Broadband Frequency Chirped Intensity-Modulated Single-Frequency 1064-nm Laser Applied Sciences | Free Full-Text | High-Power Broadband Frequency Chirped Intensity-Modulated Single-Frequency 1064-nm Laser](https://www.mdpi.com/applsci/applsci-10-04450/article_deploy/html/images/applsci-10-04450-g002.png)