All digital controller for tunable diode lasers
- Extremely low noise & precise control
- Knobs & touch user interface
- Remote PC GUI & command control
- Intelligent locking features
DLC pro is the new benchmark for diode laser controllers. It defines a new level of low noise and convenience. Its low noise and drift levels make our DL pro series lasers even more silent and stable. Its impressive resolution (23 bits and more) enable precise control, and its knob/touch user interface and PC GUI allow for the most comfortable and intuitive operation. Easily change scan parameters with a multi-touch gesture to zoom onto spectral features or use the included FFT to analyze signals.
With the intelligent locking option DLC pro Lock installed, you may select a spectral feature by taping on it on the screen and locking the laser to that peak with a simple press of a button. The intelligent locking option includes a 2-channel digital PID loop (bandwidth about 30 kHz), modulation and demodulation (11 Hz to 160 kHz) and ReLock. It allows for top-of-fringe as well as side-of-fringe locks with easy optimization of the PID parameters. The features are enabled with a software license.
If this license is not purchased along with the DLC pro, the license-protected features may be tested with the 30-day trial license provided with the DLC pro. A license for your device without time limit may then be purchased later. Activating by entering a license-key is an easy procedure that may be done by the customer.
For all systems, it is possible to stabilize the power of the laser system by controlling the current of the laser diode (DL pro, CTL) or the tapered amplifier chip (TA pro, TA-SHG pro, TA-FHG pro) using an external photodiode (all systems) or an internal photodiode (CTL, TA pro, TA-SHG pro, TA-FHG pro). Bandwidths in the kilohertz regime are achieved (see CC-500 and CC-5000 sections in the specifications below).
The optional PDH module enables Pound-Drever-Hall Locks. It provides a modulation reference and creates the error signal by demodulating a spectroscopy signal, typically recorded with a photodiode near a reference cavity.
The DLC ext allows extending the DLC pro with TOPTICA’s well-established fast locking modules. These modules provide high performance laser locking if a faster feedback than available with the DLC pro Lock option is needed.
TOPTICA provides updates of the software in the download section below and announces new versions by an email newsletter. You may subscribe by sending an email to firstname.lastname@example.org with subject "subscribe". For details of the newly provided features and the update procedure, see the download section below.
See more in our product video:
General / Main Control MC
General / MC Operator Controls Touch Display, 10 push buttons, 4 knobs, 1 key switch Display 7 inch, 800 x 480 pixels, 262 k colors Touch panel Projective capacitive (PCT) with multi-touch capability Interfaces Ethernet and USB
Current Control CC-500 & CC-5000
Current Control CC-500 Current Control CC-5000* Max. laser current 2x 245 mA or 1x 490 mA (selectable) 5000 mA Max. laser voltage 7 V @ 360 mA, 5 V @ 490 mA 3.5 V Smallest current step 0.015 μA 5 μA Current noise density 280 pA / sqrt(Hz) @ 1 kHz 120 nA / sqrt(Hz) Low frequency current noise (0.1 Hz ... 10 Hz) < 50 nA p-p 10 μA p-p Temperature coefficient of laser current <3 ppm / K typ. after > 1 h warm-up Long-term stability of laser current < 100 ppm / sqrt(khrs) after > 1 h warm-up Modulation bandwidth (-3dB, 45°) Between 15 kHz and 30 kHz
(depending on laser diode)
100 Hz Achievable power stabilization bandwidth DL pro: 10 kHz, CTL: 4 kHz TA pro: 4 kHz, SHG pro: 1 kHz * For TA pro systems two CC-5000 can be combined to drive one amplifier chip at a higher current.
Temperature Control TC
Temperature Control TC Max. TEC current 3 A Max. TEC voltage 3 V @ 3 A / 12 V @ 3 A Smallest set temperature step 50 μK Act. temperature noise (100 μHz ... 1 Hz) < 300 μK p-p Repeatability of actual temperature < 0.001 K after > 1 h warm-up Temperature coeff. of actual temperature < 140 ppm K / K after > 1 h warm-up
Piezo Control PC
Piezo Control PC Piezo voltage range -1 V ... +140 V Max. piezo current (charge / decharge) 25 mA Smallest piezo voltage step 0.01 mV Voltage noise density 140 nV / sqrt (Hz) @ 1 kHz Temperature coefficient of piezo voltage < 40 ppm / K Small signal bandwidth 3 kHz (0 load)
Inputs / Outputs
Inputs / Outputs Analog inputs (BNC) 2x (24 bit, DC .. 300 kHz) 2x (16 /10 bits, DC .. 300 kHz / 1.7 MHz) Input range, impedance -4 V ... + 4V, 10 kOhm Analog outputs (BNC) 2x (16 bits, DC .. 300 kHz) Output range, impedance -4 V ... + 4V (no load), 50 Ohm Digital inputs** 4x TTL, 10 kOhm, Sub-HD 15-pin Digital outputs** 4x TTL, 50 kOhm, Sub-HD 15-pin ** Optional break-out cable with 8 SMB connectors available.
Environmental, Power Supply PS
Environment / Supply Voltage requirements 100 - 240 V~, 50 / 60 Hz Power requirements 250 W max., typ. 35 W, no active cooling fans Size (H x W x D) 154 mm x 450 mm x 348 mm Weight 8.0 kg (with MC, CC-500, PC, TC) Operating temperature 5 °C ... 40 °C Transport temperature 0 °C ... 40 °C Relative humidity 80 % for up to 31 °C, decr. lin. to 50 % at 40 °C
- Pound-Drever-Hall PDH
The DLC ext allows extending the DLC pro with TOPTICA’s well-established fast locking modules.
These modules provide high performance laser locking if a faster feedback than available with the DLC pro Lock option is needed.
Number of possible modules 2 Supported modules PDD 110, FALC 110, mFALC 110, DigiLock 110 Size (H x W x D) 131 mm (+67 mm) x 184 mm x 286 mm Power supply 90 - 264 VAC (47 - 63 Hz), external, automatic mains voltage detection
- General / Main Control MC
DLC pro Software Update
TOPICA provides software updates for the DLC pro about twice a year. These updates provide new features and bug fixes but are not installed automatically. To update your system please follow the update instructions.
- DLC pro Update Instructions
- Software Update Version 1.9.0 (120 MB, 13.09.2018) PC GUI requires Windows 7 or newer - Windows XP is not supported any more.
- New updates are announced by an email newsletter. You may subscribe by sending an email to email@example.com with subject "subscribe".
- This table summarizes the improvements TOPTICA introduced with the previous updates. The latest update includes all improvements.
Release Date New Systems New Features Notable Improvements and Bug Fixes 1.9 08/2018 DLC Holo-Litho 405 Lock wizard ARC (analog remote control) for TC added 1.8 04/2018 TopWave 266
Better protection in case of exchange of laser heads 1.7 01/2018 MDL pro
CTL scan-trigger problems fixed
User interface for power stabilization easier to use
1.6 04/2017 DFB pro
Air pressure compensation
TA chips up to 10 A
Routine for setting the lock-in phase automatically
Added display elements to ease finding in-loop signals
1.5 09/2016 DL-FHG pro
Service scripts Locking without selected lock-point enabled
SHG and FHG system display seed power correctly
1.4 03/2016 Power stabilization
FFT for all systems Labview example
CTL: microsteps enable
Limitations in signal routing lifted
Scan and lock screen combined to ease operation
Direct access of scaling mode
1.3 06/2015 DL-SHG pro
Problem of freezing touch UI fixed
Limits of FeedForward increased
Correct display of TA pro power
1.2 11/2014 CTL Improved handling of touch UI events 1.1 09/2014 TA pro Cross talk between ARC of CC and PC modules removed 1.0 02/2014 DL pro
The integration of the DLC pro into control program is supported by:
- TOPTICA Python Laser SDK (updated with every DLC pro update)
- LabView example VIs for connecting to DLC pro (no technical support)
Additional Product Information
- Article: Digital Revolution in Laser Control (Physics Best, 4/2014)
- Article: Digitale Bedienkonzepte halten Einzug ins Laserlabor (LASER, 2/2014, German)
- Application Note: Trapping and quantum computing
- Application Note: Temperature measurements above the Arctic
- Application Note: Biomagnetic measurements benefit from laser know-how
- Article: Slow Light: Moving Out of the Lab (Photonics Spectra, July 2014)
- Article: Rauscharme Revolution (Best of, 2013, German)
- Article: C. Nölleke et al, Absolute Frequency Atlas from 915 nm to 985 nm based on Laser Absorption Spectroscopy of Iodine (2018)
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