Axiom Optics offers a versatile portfolio of CW laser modules for a wide range of applications. The selection features high-performance, compact modules, including the renowned Lambda Beam and Lambda Mini series from the German specialist RGB Lasersystems. These lasers are engineered for exceptional reliability, with excellent beam quality, high wavelength stability and an impressive cost-to-performance ratio. Whether you need a single-wavelength source or are building a complex multi-wavelength system, the modules deliver consistently robust performance, including the precise wavelengths required for a true-color RGB (red, green, blue) laser system for high-resolution microscopy, display or flow cytometry. Optical powers reach 1 W for seamless integration into industrial, scientific and medical setups.

RGB Lasersystems Continuous Wave Lasers

The Lambda Beam and Lambda Mini high-performance modulatable lasers feature a very compact design, with optical powers up to 1 W. High durability, excellent beam quality and many options for system integration make them ideal for industrial, scientific and medical applications. The robust diode laser module at the heart of each system ensures a long operational lifetime, a reliable choice for critical processes that depend on a stable continuous wave laser source.

Features of Lambda Beam and Lambda Mini CW laser modules:

• Available wavelengths from 375 nm to 1550 nm
• Compact design for easy integration
• Optical power up to 1 W
• Active temperature stabilization for optimal diode performance
• Optional fiber coupling for flexible beam delivery
• Analog or digital modulation for precise control of the output
• Digital control via USB for convenient operation and integration

Compare CW Laser Modules

Model	Wavelengths	Max power	Output	Control
Lambda Beam	375-1064 nm diode, 532 nm DPSS	Up to 1000 mW	Collimated or fiber coupled	USB; modulation to 1.5 MHz (PowerBox)
Lambda Beam Wavelock	405, 633, 638, 640, 658, 685, 785, 808, 852 nm	Wavelength dependent	Single mode, linewidth <0.05 pm	Power Controller or PowerBox
Lambda Mini Evo	405-1550 nm	Up to 60 mW	Free collimated TEM00 beam	USB powered and controlled
Lambda Mini Fiber	375-785 nm	Up to 75 mW	80 cm single-mode fiber, FC-PC or FC-APC	USB powered and controlled

Power depends on wavelength. Axiom Optics confirms the available configuration with each quote.

How to Choose a CW Laser Module

Start with the wavelength

Match the wavelength to your fluorophore, Raman excitation, absorption band or detector. Diode wavelengths can be fine-tuned by temperature, and the Lambda Beam is available at more than 50 wavelengths. For 532 nm, the Lambda Beam uses a DPSS laser, available with the PowerBox controller. Read Applications of CW 532 nm Lasers for a closer look at green lasers.

Then size the power and form factor

For alignment, portable instruments and space-limited OEM designs up to 75 mW, the USB-powered Lambda Mini is the simplest choice. For higher power, up to 1 W, or for demanding integration, choose the Lambda Beam.

Decide on beam delivery

Choose a free collimated beam for direct illumination, or fiber coupling to deliver light to a microscope, probe or remote instrument. The Lambda Mini Fiber includes a factory-aligned fiber; the Lambda Beam accepts an adjustable fiber coupler for single-mode, polarization-maintaining or multimode fibers.

Check modulation and linewidth needs

For fast switching, the Lambda Beam PowerBox supports modulation up to 1.5 MHz. For Raman spectroscopy and other high-resolution work, the Lambda Beam Wavelock offers single-mode emission with linewidth below 0.05 pm.

Building a multi-wavelength or RGB system

Combine modules at, for example, 450, 520 and 638 nm for a true-color RGB source, or add wavelengths to match each channel of a flow cytometer or multi-color microscope. Verify each beam with a laser beam profiler.

Relevance and Applications of Diode Laser Modules

Compact continuous wave lasers, often built as diode laser modules, are highly versatile thanks to their stable, uninterrupted output, excellent beam quality and small footprint. In scientific research they are indispensable for demanding tasks such as high-resolution Raman and fluorescence spectroscopy, where narrow linewidth and stable intensity improve signal-to-noise ratio. They are also used in medical diagnostics and treatments, including phototherapy and dermatological procedures, where precise, controlled energy delivery is paramount. Industrially, diode laser modules excel in precision material processing. Their compact design suits portable devices for field-deployable spectroscopy, remote sensing and many types of microscopy, including scanning and confocal microscopy for high-resolution imaging in the biological and materials sciences. Their reliability and consistent performance also make them valuable in optical trapping and manipulation, interferometry, and telecommunications.

Explore all laser sources, including single-frequency DPSS lasers and supercontinuum sources.

CW Laser Module FAQ

What is a CW laser module?

A CW (continuous-wave) laser module is a compact laser that emits a steady, uninterrupted beam rather than pulses. Modules such as the Lambda Beam and Lambda Mini combine the laser diode, collimating optics and temperature control in one package, ready to integrate into instruments and lab setups.

Which wavelengths are available?

The Lambda Beam and Lambda Mini series from RGB Lasersystems cover 375 nm to 1550 nm. The Lambda Beam offers more than 50 wavelengths from 375 to 1064 nm, including a 532 nm DPSS laser, and the Lambda Mini adds 1310 and 1550 nm.

What is the difference between the Lambda Beam and the Lambda Mini?

The Lambda Beam is the high-performance series, with output powers up to 1 W, modulation up to 1.5 MHz and options such as Wavelock and fiber coupling, driven by a Power Controller or PowerBox. The Lambda Mini is a complete laser in a 40 x 25 x 25 mm package that is powered and controlled entirely over USB, with up to 75 mW.

Which CW laser is best for Raman spectroscopy?

Raman spectroscopy needs a narrow, stable emission line. The Lambda Beam Wavelock provides wavelength stability below 0.015 nm and linewidth below 0.05 pm at wavelengths including 785 and 852 nm, and the Lambda Beam 532 nm DPSS is offered in narrow line versions.

Can I build an RGB laser system from these modules?

Yes. The portfolio includes the red, green and blue wavelengths needed for a true-color RGB laser system, for example 450, 520 and 638 nm Lambda Beam modules, for microscopy, display and flow cytometry.

Can the lasers be fiber coupled and modulated?

Yes. Lambda Beam lasers accept an optional fiber coupler for single-mode, polarization-maintaining or multimode fibers, and support analog or digital modulation up to 0.5 MHz with the Power Controller or 1.5 MHz with the PowerBox. The Lambda Mini Fiber comes with a factory-aligned, permanently attached single-mode fiber.