TopMode

Single-frequency, narrow linewidth diode laser

TOPTICA’s TopMode lasers operate as easily as a HeNe, but also offer higher power at 405 nm. The TopMode sets records in terms of power, coherence and wavelength stability. The proprietary regulation method, called CHARM, ensures continuous single-frequency operation. TopMode and CHARM means nothing less than reliable 24/7 operation.

The TopMode, with its CHARM controller, is particularly well-suited to applications that require a strong single-frequency, high-coherence beam. Raman spectroscopy of inorganic materials, holography, interferometry and holographic data storage all benefit from the TopMode's characteristics: High power and wavelength stability at a wavelength that is visible to the naked eye, compatible with silicon detectors, making the live of engineers and scientists much easiers.

Your Benefits

High power in a small package
100mW of power and a long coherence length. The TopMode is the only single-frequency laser on the market in this form factor providing up to 100 mW of power at 405 nm. 
Repeatable high-resolution measurements
Our low-noise CHARM controller, together with our grating-stabilised diode laser, provides active coherence control. The external cavity architecture provides a long coherence length and our CHARM coherence control system monitors the laser and actively maintains single-frequency operation.
Run your measurement with high uptimes
Our lasers keep running in single frequency for a long time. Compact and passively air-cooled, the TopMode laser head is absolutely silent and free of vibrations. 
Develop your products faster
The TopMode is designed with OEM integration in mind. The laser head is compact and passively cooled, enabling easy integration into your optical system. 
Easy laser control with the Python Laser SDK
Our TOPTICA Python Laser SDK (Software Development Kit) makes straightforward the control of TOPTICA lasers from a computer using the Python programming language.

Applications

Raman spectroscopy
Direct writing lithography
Interferometry
Holography & augmented reality

Options

Higher power
If you need more power for your application, please refer to our HP product variants with up to 100 mW of optical power output at 405 nm. See specifications for details.
Fiber delivery
The FD2 option comes with TOPTICA’s patented SmartDock fiber coupler with a coupling efficiency of more than 50 % and a 2 m polarisation-maintaining fiber. See products marked with FD2 in the specifications.
Higher optical isolation
An optional second optical isolator provides enhanced protection against optical feedback into the laser. This ensures stability of the output power, as well as wavelength stability and coherence.
Wavelength selection
Request a wavelength selection of +/- 0.25 nm instead of the standard +/- 2 nm.
Custom design
A large variety of wavelengths between 375 nm and 515 nm is available with the TopMode CD variant. Please inquire availability of your desired wavelength.

Specifications

Talk to an expert Request a quotation Request a demo

Downloads

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Technical Drawings

Literature

Articles