Solutions/ Laser Control
Born from research
QubeCL and QubeDL have been designed for state-of-the-art scientific purposes. The patented design, developed in a research laboratory, provides the lowest current-noise of any commercially available instrument.
The modular architecture solves the problem of sourcing large output currents while maintaining a noise level always below 1 nA/sqrt(Hz). In general, the current-noise of commercial drivers linearly increases with the maximum output current. This is not the case of QubeCL. In fact, its noise increases roughly with the square-root of the maximum current, always ensuring a sub-shot-noise operation.
With Qube-system the current noise does not contribute to broadening of laser emission, ensuring the narrowest linewidth and the highest frequency stability.
Compact and versatile
The fully modular, configurable and engineered Qube-system design provides the versatility and the compactness of a custom solution while keeping the ready-to-use typical of a benchtop instrument.
Infinite possibilities one
Up to 32 different configurations can be obtained by combining the 8 modules of the QubeCL system, covering multiple different needs:
You can embed your butterfly-packaged or HHL-packaged laser into your driver. All the signals will be internally routed to the laser: no cables around, a full control in a 10 cm x10 cm footprint. Compatible both with fiber-coupled and free-space lasers. In the latter case you can have the beam always at the right height by using the adjustable periscope accessory. For higher-power lasers a water-cooled option is also available.
Laser Socket Module
Laser Socket Module You can embed your butterfly-packaged or HHL-packaged laser into your driver. All the signals will be internally routed to the laser: no cables around, a full control in a 10 cm x10 cm footprint. Compatible both with fiber-coupled and free-space lasers. In the latter case you can have the beam always at the right height by using the adjustable periscope accessory. For higher-power lasers a water-cooled option is also available.
You can embed your butterfly-packaged or HHL-packaged laser into your driver. All the signals will be internally routed to the laser: no cables around, a full control in a 10 cm x10 cm footprint. Compatible both with fiber-coupled and free-space lasers. In the latter case you can have the beam always at the right height by using the adjustable periscope accessory. For higher-power lasers a water-cooled option is also available.
With overvoltage protection capabilities, it ensures a safe operation of the laser, and allows setting the laser polarity and grounding. Moreover, 2 independent external modulation signals can be efficiently coupled to the laser. As an option, an internal digital signal generator (DDS) can be added on both modulation channels.
For any frequency/phase stabilization need, you can choose among Phase Lock Loop (PLL), Pound-Drever-Hall (PDH) and Lock-In Amplifier (LIA) modules. Seamlessly lock your laser to an external source, cavity or molecular reference. Here are some examples of lock applications with QCLs; the same scheme can be applied with other laser diodes and QubeDLs.
Choose between different current ratings, and combine them for larger current output, while always keeping the noise at the lowest level.
For current-driven TEC stages the temperature controller module ensures <1 mK operation in any condition.
It is not only a base: it is the cooling unit of the instrument and it allows you to screw it firmly at place. Compatible with the standard pitch of optical tables.
Laser Socket Module
You can embed your butterfly-packaged or HHL-packaged laser into your driver. All the signals will be internally routed to the laser: no cables around, a full control in a 10 cm x10 cm footprint. Compatible both with fiber-coupled and free-space lasers. In the latter case you can have the beam always at the right height by using the adjustable periscope accessory. For higher-power lasers a water-cooled option is also available.
Laser Head
With overvoltage protection capabilities, it ensures a safe operation of the laser, and allows setting the laser polarity and grounding. Moreover, 2 independent external modulation signals can be efficiently coupled to the laser. As an option, an internal digital signal generator (DDS) can be added on both modulation channels.
Lock module:
For any frequency/phase stabilization need, you can choose among Phase Lock Loop (PLL), Pound-Drever-Hall (PDH) and Lock-In Amplifier (LIA) modules. Seamlessly lock your laser to an external source, cavity or molecular reference. Here are some examples of lock applications with QCLs; the same scheme can be applied with other laser diodes and QubeDLs.
Current Module
Choose between different current ratings, and combine them for larger current output, while always keeping the noise at the lowest level.
Temperature Controller
For current-driven TEC stages the temperature controller module ensures <1 mK operation in any condition.
Main Unit
The core part of the driver, providing external interface with USB interface and Wi-Fi or LAN options. It carries the real-time processing of the laser parameters and can operate in completely autonomous mode.
Base
It is not only a base: it is the cooling unit of the instrument and it allows you to screw it firmly at place. Compatible with the standard pitch of optical tables.
You can compose the configuration of the Qube-System that fits your experimental needs. The instrument part number is composed as follows:
Here the codes and additional information for each module in the catalog.
Listed below the codes and additional information for each module in the catalog:
Example configurations
The simplest configuration: the essential modules (Base, Main Unit and Laser Head) and one current module. The numeric code identifies the total output current that can be obtained by adding one or more current modules to the system. In this case only the CD05 (500 mA) module is present.
Here two current modules are combined for 1.5 A maximum current output (CD05 + CD10). The -P code identifies the PLL module. Only one lock module can be used in a Qube configuration.
This is one of the most complete configurations. The 1A current module (CD10), the TEC (TC) and phase-locked loop (PLL) module are added to the essential modules. The laser itself can be embedded into the Qube system thanks to the Butterfly laser housing module. Here the laser is coupled in an optical fiber.
Are you still not sure of which configuration you need? We will support you in tailoring it for your experiment, just contact us.
State of the art Laser Controllers
In the search on ultra-high-precision spectroscopic techniques, ppqSense developed advanced laser drivers that met the requirements of very low current noise and high stability. In this context, the QubeCL and QubeDL lines of laser controllers were born.
The modular architecture of the Qube-family allows the user to expand their possibility, thus covering almost any typical need in terms of control and stabilization of the laser phase/frequency against a reference source, an optical cavity or a molecular transition.
Born from research
QubeCL and QubeDL have been designed for state-of-the-art scientific purposes. The patented design, developed in a research laboratory, provides the lowest current-noise of any commercially available instrument.
The modular architecture solves to problem of having large output currents with a noise level always below 1 nA/sqrt(Hz).
In general, the current-noise of commercial driver scales linearly with the maximum output current. This is not the case of QubeCL. In fact its noise scales roughly with the square-root of the maximum current, always ensuring a sub-shot-noise operation.
With Qube-family systems the current noise does not contribute to the broadening of the laser emission, thus ensuring the narrowest linewidth and the highest frequency stability.
Compact and versatile
The fully configurable and engineered QubeCL and QubeDL systems provide the versatility and the compactness of an OEM solution while keeping the ease of use of a benchtop instrument.
QubeCL and QubeDL can be fully remotely controlled, and provide a variety of autonomous control routines that allow for a stand-alone operation in completely safe conditions for the laser.
Modularity
Laser Socket Module
You can embed your butterfly-packaged or HHL-packaged laser into your driver. All the signals will be internally sent to the laser. No cables around, a full control in a 10 cm2 footprint
Laser Head
Set the laser polarity and grounding. Send 2 independent external signals to the laser (DC to 3 MHz)
Phase-Locked Loop
Seamlessly phase-lock you laser to an external reference. It’s easy, try and see!
Current Module
Choose between 500 mA and 1 A modules, and combine them for larger current output.
Temperature Controller
Temperature stability is not an option.
QubeCL ensures <1 mK operation in any condition.
Main Unit
The brain of QubeCL, with USB interface and Wi-Fi or LAN options. It accepts two unipolar DC supply voltages, one for the current section and the other for the temperature section.
Base
It is not only a base: it is the cooling unit of the QubeCL. For larger currents you will need it!
Example configurations
QubeCL05
Do you need the best current driver on the market?
Choose the current driver module, and get the simplest QubeCL, together with two independent modulation inputs that allow to control the current from DC to more than 3 MHz.
QubeCL15-P
Two or more current modules can be combined for higher current output.
The PLL module provides full phase-lock capabilities.
QubeCL10-TP-BFS
Many modules, many functions.
The Temperature Controller module provides complete stabilization of the laser.
The laser itself can be embedded into the QubeCL.
Ready to Use
Easy Interface
Compact Mechanical