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DL pro

Tunable diode laser available with digital control DLC pro

  • Tunable diode laser in patented pro design
  • Ultra-stable against temperatures & acoustics
  • With digital control DLC pro: Superior performance and remote control
  • Linewidth down to 10 kHz free running
  • Linewidth below 1 Hz possible with lock to external reference cavity

Our DL pro is the ultimate tunable diode laser. Its revolutionary mechanical design allows for both easy operation and extreme stability at the same time. It offers highest output powers, and optimized mode-hop-free tuning with a perfectly positioned virtual pivot point for the grating movement (Patents: DE 10 2007 028 499 and US 7970024). Together with the digital control DLC pro controller it shows unrivalled linewidth and drift – with the most comfortable and intuitive user interface. A software license may be purchased to enable frequency-locking features.

The DL pro HP diode laser features a special resonator design, which allows for higher single-mode output powers from "visible" laser diodes. Like the DL pro, it is an extended cavity diode laser (ECDL). Both lasers feature various modulation inputs and may be equipped with various options like fiber coupling, beam shaping etc.

With the DL pro F locking is faster than ever laying the foundation for the next generation quantum technology. The F variant of our DL pro features an intra-cavity EOM which provides two feedback channels. One is used for fast adjustments to ensure the superb locking performance, the other guarantees the high robustness of the lock.

We provide a wide range of Top Sellers which are turnkey solutions for typical applications such as laser cooling of atoms or ions. These systems combine a DLC pro and either a DL pro, DL pro HP or DL pro F including an appropriate isolator. They may be combined with fiber coupling and the software license enabling frequency-locking features.

Top Sellers are available at these wavelengths:
369, 397, 399, 420, 461, 633, 637, 670, 674, 729, 780 and 850 nm.
See Additional Top Seller section below for details.

Furthermore, the DL pro is available with all laser diodes listed in our stocklist of AR-coated and Fabry-Perot laser diodes. An overview of the resulting wavelength coverage is shown in the Additional Information section below.

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  • Specification

      DLC DL pro DLC DL pro HP DLC DL pro F
    Wavelength coverage 369 .. 519 nm *, 628 .. 1770 nm * 369 .. 519 nm *, 633 .. 641 nm please inquire
    Typical power range 10 .. 300 mW 15 .. 400 mW after the isolator similar to DLC DL pro
    Typical coarse tuning range 2 .. 100 nm 2 .. 5 nm  
    Typical mode-hop free tuning range ≥ 20 GHz ≥ 5 GHz
    Typical linewidth (5 µs integration time) 10 .. 300 kHz 150 .. 500 kHz 10 .. 100 kHz ****

    Typical output beam characteristics 3 mm x 1 mm 2 mm x 1 mm 3 mm x 1 mm
    Typical output beam polarization linear, > 100:1
    ASE background, typ. < -40 dB
    Optical isolation optional, see Options built-in, > 30 dB built-in, > 60 dB
    Fiber coupling efficiency**: min. (typ.) 55 (65) %
    Typical long term frequency change with room temperature  << 100 MHz / K
    Dimensions laser head (H x W x D) 90 x 90 x 240 / 300 mm³ *** 90 x 90 x 240 mm³ 90 x 90 x 240 / 300 mm³ ***
    Weight laser head 2.8 - 4.4 kg  2.8 - 3.5 kg 2.8 – 4.4 kg
    Dimensions control unit (H x W x D) 154 x 450 x 348 mm³
    Weight control unit 8.0 kg
    Power supply 100 .. 240 V~, 50/60 Hz (wide range input) 
    Power consumption Typ. < 35 W, max. 250 W
    PC Interface (PC GUI included) Ethernet, USB, analog control
    Environmental temperature 15 - 30 °C (operating), 0 - 40 °C (storage and transport) 
    Environmental humidity Non condensing

    * Spectral coverage with gaps
    ** With TOPTICA's FiberDock, efficiencies are possibly lower with strong ellipticity or short wavelengths
    *** The standard length is D=240 mm. If needed a housing of D=300 mm is automatically used.
    **** Same linewidth as DLC DL pro with Narrow Linewidth option

    Please contact us for details.
    Specifications are subject to change without further notice.

  • Additional Top Seller

    DLC DL pro ... HP
    369    		 HP
    397    		 HP
    399    		 HP
    420    		 HP
    461
    633
    Typical applications Yb ion cooling Ca ion cooling Yb cooling Ca cooling, Sr ion cooling, Rb Rydberg Sr cooling, Cs Rydberg,
    K Rydberg    		 HeNe laser wave-
    length
    Peak power (mW) after the isolator, specified (typical) 13 65 110 70 400 40
    Wavelength (nm) 369.2 - 370.2 396.5 - 398.5 399 - 400.5 420 - 423 457 - 461 631 - 635
    Linewidth (kHz @5 µs delay) 150 150 150 150 150 200
    Included optical isolator > 28 dB > 35 dB > 35 dB > 35 dB > 35 dB > 60 dB
    Polarisation linear, PER 100:1
    Polarisation axis diagonal vertical
    Fiber coupling efficiency with FiberDock (optional), specified (typical) 55% (65%)
    replacement of laser diode in factory by customer
    Ships from stock no no no no no no
    More power with DLC TA pro or BoosTA available no no no no no no
    (Even) more power with DLC TA-SHG pro available yes yes yes yes yes yes

    DLC DL pro ... HP
    637
    670    		 F
    674    		 F
    729
    780
    850
    Typical applications NV center, Yb ion clear out laser Li cooling and repump Sr ion clock Ca ion clock Rb cooling and repump, K cooling and repump Cs cooling, Ca ion repump
    Peak power (mW) after the isolator, specified (typical) 45 (50) 25*** 14 28 100 (120)** 70 (75)*
    Wavelength (nm) 635 - 639 665 - 673 < 672 - 674 < 728 – > 730 760 - 810 840 - 875
    Linewidth (kHz @5 µs delay) 500 200 100 60 50 100
    Included optical isolator > 35 dB > 60 dB > 60 dB > 60 dB > 60 dB > 60 dB
    Polarisation linear, PER 100:1
    Polarisation axis diagonal vertical vertical vertical horizontal vertical
    Fiber coupling efficiency with FiberDock (optional), specified (typical) 55% (65%)
    replacement of laser diode in factory by customer in factory in factory by customer by customer
    Ships from stock no no no no yes yes
    More power with DLC TA pro or BoosTA available no yes yes yes yes yes
    (Even) more power with DLC TA-SHG pro available yes yes no no no no

    * Detailed power specification after the isolator:
    840 - 842 nm: > 50 mW
    842 - 850 nm: > 65 mW
    850 - 875 nm: > 70 mW (typ. 75 mW)
    875 - 877 nm: > 65 mW    		 ** Detailed power specification after the isolator:

    760 - 770 nm: > 42 mW (typ. 50 mW)
    770 - 780 nm: > 55 mW
    780 - 795 nm: > 85 mW (typ. 100 mW)
    795 - 805 nm: > 100 mW (typ. 120 mW)
    805 - 810 nm: > 85 mW

    		 *** Detailed power specification after the isolator:
    665 - 666 nm: > 15 mW
    666 - 670 nm: > 25 mW
    670 - 673 nm: > 15 mW
  • Additional Information
    TOPTICA AG - DL pro (HP): Available wavelengths and corresponding output power levels DL pro (HP): Available wavelengths and corresponding output power levels
    TOPTICA AG - DL pro (HP): Available wavelengths and corresponding output power levels (visible region only) DL pro (HP): Available wavelengths and corresponding output power levels (visible region only)
    TOPTICA AG - DL pro F: Fast feedback allows to push servo bumps further away from the carrier DL pro F: Fast feedback allows to push servo bumps further away from the carrier
    TOPTICA AG - Frequency noise measurement DLC DL pro: Frequency noise density of the laser light created with a DLC DL pro and a SYST DL pro Frequency noise measurement DLC DL pro: Frequency noise density of the laser light created with a DLC DL pro and a SYST DL pro
    TOPTICA AG - Linewidth measurement DLC DL pro: Delayed self-heterodyne linewidth measurement. Due to the long coherence length periodic modulation appears. The linewidth is obtained from the modulation depth. Linewidth measurement DLC DL pro: Delayed self-heterodyne linewidth measurement. Due to the long coherence length periodic modulation appears. The linewidth is obtained from the modulation depth.
  • Options

    Narrow linewidth
    		 With this option DL pro laser systems are optimized for narrow linewidths. It is also suited for seed lasers of TA or NLO systems as well as lasers of Laser Rack Systems but not for DL pro HP lasers. DL pro F lasers are always optimized for a narrow linewidth.
    Fiber Coupling
    (FiberDock)
    		 TOPTICA’s patented fiber coupler provides highest single-mode fiber-coupling efficiencies, easy alignment and at the same time highest stability. Fiber coupling efficiency of > 55% is specified for all DL pro, beam shaping optics are included if needed. TOPTICA additionally offers a wide range of single-mode and polarization-maintaining fibers, including fiber-optic beam splitters. Optical isolation is mandatory for fiber-coupled diode laser systems.
    Optical Isolation
    		 Isolators are used to protect the laser diode against back reflections. This not only prevents damage to the diode but also ensures untroubled tuning and single-frequency operation. Fiber-coupling with angle-polished fibers (both ends) requires at least a single-stage isolator (> 30 dB). Double-stage isolators are needed if reflections from the experiment into the laser are expected. Fiber-coupling with non-angle-polished fibers also requires a double-stage isolator (> 60 dB).
    Beam Shaping
    		 To shape elliptical laser beams into round profiles, either an anamorphic prism pair (APP) or cylindrical lenses are used. The compression ratio is set at the factory.
    Motorization
    		 The motorization of the coarse tuning offers manual control and operation via software interface. This option is available for most DL pro laser systems (most AR laser diodes and some FP diodes) including DL pro HP laser systems but not for DL pro F systems. See Downloads section below.
    Bias-T
    		 The DL pro (HP) has two modulation inputs that allow current modulation frequencies of up to 150 MHz. A Bias-T allows even higher current modulation frequencies of up to several GHz, depending on the diode. It is also suited for seed lasers of TA or NLO systems. This option is not available for DL pro F systems.
    Electronics Modules A broad variety of electronic locking modules is available for frequency stabilization.
  • Applications
  • Downloads

    Software

    • For software updates and Python support of the digital laser controller please see the Downloads section on the DLC pro page.
    • Mot / DL pro Software Version 1.15b: Free download of the latest MOT / DL pro software for DL pro equipped with the motorization option. The software consists of sample VIs for computerized motor control. Some VIs have been compiled to run without a LabView installation. The software is provided "as is" as an example for integrating the motor in an experiment or setup.


    Technical information

    • Product Brochure: Tunable Diode Lasers (please see website for latest specs!)
    • Technical Drawings: DL pro (standard laser head)
      This laser head is used for all TopSellers and all DL pro HP as well as most configured DL pro.
    • Technical Drawings: DL pro (long laser head)
      This longer housing is used if additional space is needed to fit the optical components into the laser head.
  • Literature

    Application notes and publications

    Current scientific publications mentioning TOPTICA DL pro

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