DL pro

Tunable external cavity diode lasers for cooling and controlling all atoms and ions

  • Intelligent locking to absorption lines or HighFinesse wavelength meters
  • Convenient local and remote operation (with DLC pro)
  • Efficient atom cooling with narrow linewidth down to 0.6 kHz free running
  • Linewidth below 1 Hz possible with lock to external reference cavity on selected wavelengths

The DL pro is a reliable ECDL laser for almost all wavelengths between 369 nm and 1770 nm. With power up to 400 mW and free running linewidth down to 0.6 kHz, the DL pro is a proven solution for most QT applications. Its digital controller allows a stable performance, the GUI making remote access easy, which is very convenient when the  DL pro rack version is requested. It is fully compatible with the extensive TOPTICA portfolio of tunable diode lasers, driving electronics, software and accessories.

 

 

DL pro
The lab standard for cooling and controlling all atoms and ions
The DL pro is the lab standard for all atoms and ions. For quantum experiments and applications the DL pro offers a plug and play laser. The system has a long legacy in laboratories and quantum companies worldwide. Wavelengths for all important atoms and ions are available, as well as the possibility to upgrade your system later, e.g. with our FALC pro fast laser locking module for linewidth narrowing. Up to 4 lasers can be operated with one DLC pro laser controller.

DL pro HP
Ideal for power hungry atoms and ions
The high power variant of the established DL pro features a special resonator design, which allows for higher output powers from laser diodes in the visible range. Like the DL pro, it features various modulation inputs and may be equipped with various options like fiber coupling, beam shaping etc. The DL pro HP is ideal for power hungry atom and ion trapping and cooling applications. For example, the Strontium transition at 461 nm can be addressed with more than 400 mW of power after optical isolator.

DL pro F
Superb locking performance for clock transitions
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. One of many applications is addressing the Ca+ clock transition at 729 nm, while reducing the phase noise around the carrier.

DL pro SMC
The care-free laser system for quantum computing offers extended active mode stability thanks to the new SAFE feature. It saves settling time in experiments and makes commercial quantum computers resistant to mode hopping. The available wavelength range extends to the blue spectral region.

DL pro BFY
Withstanding pressure fluctuations, ideal for transportable systems
The hermetically sealed butterfly package and the compact design of the resonator allow for the best passive mode stability and robustness within the DL pro family. It is especially suitable for applications where a care-free operation of the lasers is required. It can even run as an outdoor system, equipped with temperature stabilization, to withstand massive winds and pressure fluctuations.

 

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 DLC DL pro BFY DLC DL pro SMC
    Wavelength coverage 369 .. 519 nm *, 628 .. 1770 nm * 369 .. 519 nm *, 633 .. 641 nm please inquire 670 .. 900 nm *, for other wavelengths please inquire please inquire
    Typical power range 10 .. 300 mW 15 .. 400 mW after the isolator similar to DLC DL pro 33 .. 65 mW after the isolator 50% of the DL pro HP;
    80% of the DL pro
    Typical coarse tuning range 2 .. 100 nm 2 .. 5 nm   ±0.1 nm  
    Typical mode-hop free tuning range ≥ 20 GHz ≥ 5 GHz > 5 GHz
    Typical instantaneous linewidth 0.6 .. 90 kHz 10 .. 850 kHz 1 .. 30 kHz **** 10 kHz similar to DL pro and DL pro HP

    Typical output beam characteristics 3 mm x 1 mm 2 mm x 1 mm 3 mm x 1 mm 1 mm x 0.8 mm similar to DL pro and DL pro HP
    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 built-in, > 30 dB
    Fiber coupling efficiency**: min. (typ.) 55 (65) % 55 %
    Typical long term frequency change with room temperature  << 100 MHz / K 300 MHz / K  << 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 *** 90 x 90 x 240 mm³ 90 x 90 x 350 mm³
    Weight laser head 2.8 - 4.4 kg  2.8 - 3.5 kg 2.8 – 4.4 kg 2.8 kg 6.3 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
    Typical applications Yb ion cooling Ca ion cooling Yb cooling Ca cooling, Sr ion cooling, Rb Rydberg Sr cooling, Cs Rydberg,
    K Rydberg
    Peak power (mW) after the isolator, specified (typical) 13 65 110 70 400
    Wavelength (nm) 368.5 - 370.8 396.5 - 398.5 399 - 400.5 420 - 423 457 - 461
    Typical instantaneous linewidth (kHz) 850 340 250 340a 40
    Included optical isolator > 28 dB > 35 dB > 35 dB > 35 dB > 35 dB
    Polarisation linear, PER 100:1
    Polarisation axis diagonal
    Fiber coupling efficiency with FiberDock (optional), specified (typical) 55% (65%)
    replacement of laser diode in factory
    Ships from stock no no no no no
    More power with DLC TA pro or BoosTA available no no no no no
    (Even) more power with DLC TA-SHG pro available yes yes yes yes yes

    DLC DL pro ...
    633    		 HP
    637
    670    		 F
    674    		 F
    729
    Typical applications HeNe laser wave-
    length    		 NV center, Yb ion clear out laser Li cooling and repump Sr ion clock Ca ion clock
    Peak power (mW) after the isolator, specified (typical) 40 45 (50) 25* 14 21
    Wavelength (nm) 631 - 635 635 - 639 665 - 672 < 672 - 674 < 728 – > 730
    Typical instantaneous linewidth (kHz) 200 (5 µs)b 600 (5 µs)b 100 30 1
    Included optical isolator > 60 dB > 35 dB > 60 dB > 60 dB > 60 dB
    Polarisation linear, PER 100 : 1
    Polarisation axis vertical diagonal vertical vertical vertical
    Fiber coupling efficiency with FiberDock (optional), specified (typical) 55 % (65 %)
    replacement of laser diode by customer in factory by customer in factory in factory
    Ships from stock no no no no no
    More power with DLC TA pro or BoosTA available no no yes yes yes
    (Even) more power with DLC TA-SHG pro available yes yes yes no no

    DLC DL pro ... 780 795 850 BFY 780 BFY 852
    Typical applications Rb cooling and repump Rb D1 and D2,
    K D1    		 Cs cooling, Ca ion repump Rb cooling Cs cooling
    Peak power (mW) after the isolator, specified (typical) 176** 65*** 70 (75)**** 65 65
    Wavelength (nm) 778 - 790 770 - 815 840 - 875 780.24 852.34
    Typical instantaneous linewidth (kHz) 3 0.6 5 10 10
    Included optical isolator > 60 dB > 60 dB > 60 dB > 60 dB > 60 dB
    Polarisation linear, PER 100 : 1
    Polarisation axis vertical horizontal vertical vertical horizontal
    Fiber coupling efficiency with FiberDock (optional), specified (typical) 50 % 55 % 55 % (65 %) 55 %
    replacement of laser diode by customer by customer by customer by TPA by TPA
    Ships from stock yes no yes no no
    More power with DLC TA pro or BoosTA available yes yes yes no no
    (Even) more power with DLC TA-SHG pro available no no no no no

    DLC DL pro ... SMC 369 SMC 397 SMC 399 SMC 780  
    Typical applications Yb ion cooling Ca ion cooling Yb cooling Rb cooling  
    Peak power (mW) after the isolator, specified (typical) 7 32 55 52  
    Wavelength (nm) 369.5 369.96 398.92 780.24  
    Typical instantaneous linewidth (kHz) 850 340 250 0.6  
    Included optical isolator > 28 dB > 35 dB > 35 dB > 60 dB  
    Polarisation linear, PER 100 : 1  
    Polarisation axis diagonal horizontal  
    Fiber coupling efficiency with FiberDock (optional), specified (typical) 55 %  
    replacement of laser diode by TPA by TPA by TPA by TPA  
    Ships from stock no no no no  
    More power with DLC TA pro or BoosTA available no no no no  
    (Even) more power with DLC TA-SHG pro available no no no no  

    * Detailed power specification after the isolator:
    665 - 666 nm: > 15 mW
    666 - 670 nm: > 25 mW
    670 - 673 nm: > 15 mW    		 ** Detailed power specification after the isolator:

    778 - 779 nm: > 160 mW
    779 - 788 nm: > 176 mW
    788 - 790 nm: > 160 mW
    *** Detailed power specification after the isolator:

    770 - 780 nm: > 48 mW
    780 - 815 nm: > 65 mW

    		 **** 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

     

    a = Estimate only
    b = Upper limit, see Application Note for more details 

  • Additional Information
    TOPTICA AG - DL pro family: available wavelengths and corresponding output power levels DL pro family: available wavelengths and corresponding output power levels
    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 - Frequency noise density measurement of a DLC DL pro at 1260 nm; instantaneous linewidths on the order of 1 kHz can be achieved for several diodes. Frequency noise density measurement of a DLC DL pro at 1260 nm; instantaneous linewidths on the order of 1 kHz can be achieved for several diodes.
  • 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 Delivery
    		 Fiber Delivery (FD) is optionally available with TOPTICA's patented fiber coupler FiberDock and a suitable polarization maintaining (PM) fiber. FiberDock provides highest single-mode fiber coupling efficiencies, easy alignment and at the same time highest stability.
    For most lasers, we specify a PER behind fiber of >20 dB with our Fiber Delivery option. Please also inquire about Long Life and High Power fibers as well as fiber 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.
       

    Technical information

    • Product Info: DL pro
    • 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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