Toptica DL DFB: Tunable Distributed Feed-back Lasers

DFB pro 03

  • Single-frequency laser with distributed feedback diode
  • Any wavelength between 760 nm .. 2880 nm available
  • Output power up to 150 mW
  • Largest mode-hop free tuning range: Up to 1400 GHz (4 nm)
  • Linewidth typ. 0.5 .. 4 MHz, coherence length 25 .. 200 m
  • Reliable operation even in harsh environments
  • Options: High-frequency modulation, optical isolation, fiber output

Distributed feedback (DFB) lasers offer wide frequency tuning and high output power in a compact, rugged setup. The frequency selective element – a Bragg grating – is integrated into the active section of the semiconductor and ensures single-frequency operation without any bulk optics. A wide variety of DFB diodes is available from stock; custom wavelengths can be provided even in low quantities.

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Toptica DL Pro: Tunable Diode Laser


  • Tunable diode laser in pro design ECDL setup
  • Available with four exceptional AR diodes around 780 nm, 850 nm, 940 nm, and 1040 nm
  • Output powers up to 100 mW
  • Ultra stable, typical linewidth 100 kHz (5 µs)
  • Very low drift with room temperature changes (typ. << 100 MHz/K)
  • Insensitive to acoustics and vibrations
  • Easy coarse tuning up to 100 nm
  • Mode-hop free  tuning up to 50 GHz (optimized virtual pivot point)
  • Beam angle compensation mirror included
  • Fast AC and DC current modulation included

The DL pro is the ultimate tunable diode laser. Its revolutionary mechanical design allows both easy operation and extreme stability at the same time. The underlying Littrow geometry allows for highest output powers, and optimum mode-hop free tuning is realized with a perfectly positioned virtual pivot point for the grating movement.

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Toptica DL100 Series


  • Economic, tunable cw diode laser in Littrow / Haensch design
  • Wide wavelength selection available: 370 nm .. 1770 nm
  • Output powers up to 300 mW
  • Typical linewidth (5 µs) 100 kHz .. 1 MHz
  • Mode-hop free  tuning typically 20 GHz
  • Beam angle compensation mirror included
  • Modular design with hands-on set-up
TOPTICA’s DL 100 is a well-established and economic laser source for spectroscopy and many other scientific applications. It is an open system that can be changed and maintained by the experienced user. The DL 100’s specifications depend strongly on the implemented laser diode and are given in TOPTICA’s laser diode stock lists.

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Toptica Frequency Converted Laser Diodes

TA SHG pro 03

  • Deep UV, blue, green, yellow ...
  • All solid state laser systems
  • CW, single-frequency output

Impressive though the success story of semiconductor lasers has been, there are still several spectral "gaps", wavelengths that cannot be directly accessed with laser diodes. However, nonlinear frequency conversion techniques can be employed to generate tunable laser radiation in the UV, blue and green spectral range. TOPTICA offers state-of-the-art laser systems based on second harmonic generation (SHG), sum frequency generation (SFG) and fourth harmonic generation (FHG).

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Toptica High Power, Amplified Laser Diodes

Amplified Lasers

In the past, the output of semiconductor lasers was limited and insufficient for a variety of applications. The facets of single-mode laser diodes (typically 1 x 3 ìm) suffer optical damage at high power levels, whereas with larger facets the desired spatial mode properties cannot be maintained. Powerful tunable CW light could thus only be generated with vast solid-state lasers or dye ring laser systems alongside with expensive pump sources.

TOPTICA managed to overcome these limitations with the development of the tapered amplifier TA 100. This laser system, introduced in 1998, offers not only high power, but also excellent beam quality and an extremely narrow linewidth. Researchers further benefit from convenient tunability, lowest operational costs and long lifetimes.

Toptica Tunable Diode Lasers


  • Grating-stabilized diode lasers
  • Littrow design
  • DFB diodes
  • Broadest wavelength coverage worldwide
  • Narrow linewidth

TOPTICA introduced its first tunable diode laser systems in 1995. Ever since, we have been dedicated to stay ahead in terms of power, wavelength coverage and variety. We scan the market for available laser diodes and cooperate with numerous manufacturers to supply customized new wavelengths and powers. At present our laser diodes cover the range from 373 to 3000 nm with only few gaps and more wavelengths are continuously being added. In addition, well-equipped testing facilities for diode characterization and lifetime measurements ensure accurate specifications, reliable laser operation and constant high quality.

Toptica Scientific Diode Lasers

toptica TDLS family

TOPTICA offers the widest wavelength coverage for diode lasers. The  Research Grade Diode Lasers cater to the vast majority of spectroscopic  applications in physics, chemistry and life sciences. Tunable single-mode and single-frequency lasers now cover wavelengths from 375 to 3000 nm. Spectral gaps and the deep UV regime down to 200 nm are closed by our frequency converted lasers (NLO series). Our industrial diode lasers combine first class diode technology and rock-solid opto-mechanical engineering, completed by convenient computer-control and intelligent protection measures - with record diode laser power at e.g. 405, 488 or 640 nm.

nLIGHT Introduces World’s Brightest Multi-Mode Diode Laser


nLIGHT, the technology leader in semiconductor and fiber lasers, introduces the industry’s brightest multi-mode diode laser. This new addition to the element® diode laser portfolio emits 200 W from a 105 µm fiber, 0.15 NA. In only one year, nLIGHT’s new element® surpassed their own previous record for the industry’s brightest fiber laser pump with over a 25% increase in power and brightness.  

This key milestone for fiber coupled diodes was achieved through innovative developments in both chip and packaging technology. The brightness of element® pumps has revolutionized the architecture of high power fiber laser and direct diode systems. Based on cascaded single-emitter laser diodes, high power fiber coupling and simplified packaging, the element® platform offers the highest brightness diodes in the industry today. Available at wavelengths from 793 nm to 976 nm, and power levels up to 220 W, these lasers are the highest performance diode lasers for next generation fiber and solid-state laser pumping. 

nLIGHT Laser Diode Bars and Arrays


nLIGHT is a leading supplier and innovator of high-power semiconductor lasers and fibers for industrial, medical, defense and consumer applications. Our solutions offer a competitive advantage in performance, reliability and efficiency. The following products are representative of nLight’s superior device capabilities and performance.  nLight’s semiconductor diode lasers are designed and manufactured to meet custom high-performance and high-reliability requirements. Full details in Read More...

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