Buying Single-frequency Lasers

The lasers you need. From the people you trust. Our experience, your advantage.

Serving North America, RPMC Lasers offers single longitudinal mode (SLM) lasers from UV to SWIR (≈266 nm – 2300 nm), delivering absolute spectral purity and precise wavelength control for spectroscopy, metrology, and telecom applications.

Advanced stabilization via SLM DPSS, HeNe, DFB, and VBG diodes, plus wavelength combiners, ensures minimal frequency drift with temperature/current control and integrated TEC for peak single-frequency performance.

Tailored OEM and turnkey solutions – free-space or fiber-coupled – feature compact, rugged designs for lab, industrial, or portable use, customizable to meet specialized scientific and research demands.

Let RPMC help you find the right SLM laser today!

Precision in photonics. Together we shape a sustainable future.

See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth B2.407) and CLEO 2025 in Long Beach (CA), USA, May 4–9 (booth 305)!

Menlo Systems offers ultrastable frequency-stabilized lasers at basically any wavelength. We supply fully characterized systems with linewidths < 1 Hz and Allan deviations of 2 × 10⁻¹⁵ (in 1 s) as well as modules and components allowing for state-of-the-art systems tailored to your requirements.

Helping our customers reach their research @ commercial goals for over 45 years

MPBC line of single frequency lasers provide low phase and intensity noise, long coherence length and high reliability for applications in metrology, quantum technologies and atomic clocks.

MPBC provides single-frequency (SF) Seed fiber lasers with a linewidth < 50 kHz,and SF lasers with a linewidth < 100 kHz.

● The SF Seed wavelength range covers 910 to 1950 nm and provides up to 50 mW of output power at selected wavelengths.

● The SF Visible wavelength range covers 460 to 790 nm and provides up to 5 W of output power at selected wavelengths. Higher powers up to 10 W are available from 532 to 671 nm.

● The NIR SF wavelength range covers 920 to 1900 nm with a fiber-coupled output power up to 30 W.

Laser Diodes. Redefined.

Eblana Photonics Discrete-Mode technology platform delivers unrivaled wavelength uniformity and stability which is critical for many scientific and industrial applications. Eblana’s DM laser exhibit high SMSR and excellent tuning performance over a wide wavelength range, with products available from 650 nm – 12 μm.

Solutions for Innovators

See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth B2.219) and CLEO 2025 in Long Beach (CA), USA, May 4–9 (booth 234)!

Our Koheras narrow linewidth, single-frequency fiber lasers are ultra-low noise sources. We have based these lasers on a DFB design to give you a robust and reliable operation. Koheras offers unprecedented low phase and intensity noise levels at rubidium, strontium, barium, and ytterbium wavelengths. It has high stability and mode-hop-free inherent single-frequency output – even when exposed to changing environmental conditions.

See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth B2.217) and CLEO 2025 in Long Beach (CA), USA, May 4–9 (booth 137)!

HÜBNER Photonics offer single frequency lasers based on diode pumped solid state technology (DPSS) in the Cobolt 04-01, 05-01 and 08-01 Series. In addition to the single frequency, all lasers have excellent wavelength stability and accuracy as well as power stability. Ideal for any application needing a highly coherent light source.

The specialist in laser technologies

See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth A2.341)!

With the CVFL, CYFL and CEFL kilo models, Lumibird offers CW fiber lasers with very narrow linewidth down to 1 kHz. These single frequency lasers emits at 1054/1083 nm for the ytterbium version, in the 1.5-µm range for the erbium version and at frequency converted wavelengths for the CVFL model. These lasers are specifically designed for applications which require high precision such as LIDAR, atomic spectroscopy, or atom cooling.

Innovative and Reliable

See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth A2.112) and CLEO 2025 in Long Beach (CA), USA, May 4–9 (booth 118)!

AdValue Photonics has the AP-SF single-frequency fiber laser emitting in the 2-μm wavelength region with a linewidth around 10 kHz. The AP-SF1 is an amplified version with 5 W output power. Both come with a turn-key benchtop housing.

See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth A2.261)!

CNI offers single-frequency lasers with wavelengths from the UV to the infrared region. They are widely used in many scientific and industrial applications. The spectral linewidth can be less than 0.00001 nm.

CNI successfully provided custom made lasers for 670.776 nm, 589.159 nm, 589.756 nm and even Q-switched SLM lasers to customers. The frequency drift over 8 hours was <200 MHz.

all wavelengths.

See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth B2.103) and CLEO 2025 in Long Beach (CA), USA, May 4–9 (booth 217)!

TOPTICA's single-frequency diode lasers employ state-of-the-art diode technology to achieve the highest single-frequency output power of any direct diode-based system. For example, the TopMode 405 nm model offers as much as 100 mW – an industry record!

Lasers, Optics, Electronics. Made in Germany.

ALPHALAS offers CW or pulsed single-frequency lasers (single longitudinal mode) with TEM₀₀ beam profile at most of the standard laser wavelengths. Various proprietary and standard technologies including monolithic non-planar ring oscillators (NPRO), DFB and unidirectional ring laser designs are used to achieve stable single-frequency operation with a very low intensity noise. The output power in CW mode ranges from several tens of mW to > 10 W at 1030 nm and 1064 nm. The single-frequency Q-switched lasers offer the unique combination of very narrow spectrum (transform-limited pulses) with very low amplitude noise due to the absence of mode beating.

Applications include high-resolution spectroscopy, interferometry, holography, optical metrology, meteorology, efficient Brillouin- and Raman-shifted generation, Raman spectroscopy and optical trapping, to mention just a few of them.

See us at CLEO 2025 in Long Beach (CA), USA, May 4–9 (booth 327)!

SHIPS TODAY: AeroDIODE offers fiber-coupled DFB laser diodes (1030 nm DFB, 1064 nm DFB, 1310 nm DFB, 1550 nm DFB or many other devices at a wavelength between 1250 nm and 1650 nm). They are offered as stock items or associated with a CW laser diode driver or pulsed laser diode driver. They are compatible with our high speed nanosecond pulsed drivers or low noise laser diode driver for single frequency emission. Typical narrow linewidth of a few tens of kHz are obtained with our dedicated ultra-low noise driver.

See also our tutorial on fiber-coupled laser diodes.

High-power & single-frequency VECSELs at 350–2150 nm for quantum technology

See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth B2.441)!

VEXLUM lasers are designed for narrow-linewidth operation, featuring an external cavity configuration with frequency-selecting elements such as a birefringent filter and etalon/EOM. Key specifications include:

• Narrow free-running linewidths: < 100 Hz (instantaneous), < 10 kHz (10 μs), < 100 kHz (100 μs)
• Sub-Hz linewidth achievable by locking to a frequency comb
• Minimal amplified spontaneous emission (ASE) background (SNR > 70 dB) due to VECSEL technology

A Tradition of High Power Photonics Leadership

QPC Lasers solutions include eye-safe MOPA diode lasers offering peak single-mode powers up to 100 W for applications including automotive LIDAR, Doppler anemometry and free space communications.