Category Archives: Uncategorized

SMD20 Mézeyrac – Variable DC Power Supply

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Features

  • High-efficiency DC/DC converter
  • +5 V to +30 V variable DC Output
  • 5W output power
  • Fan cooler
  • EMI noise immunity
  • High reliability
  • Ideal for rapid and reliable prototyping

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Applications

  • Stroboscopic magnetic imaging TEM (Transmission
    Electron Microscope)

Overview

The modules of the SMD-Series provide the experimentalists a complete line of instruments for the generation of short pulses at high repetition rates. First designed for stroboscopic magnetic imaging TEM (Transmission Electron Microscope), the SMD-Series offers a complete solution to deliver sub-nanosecond pulses into 50-loads at repetition rates ranging from DC to 10MHz.
The SMD20 Mézeyrac module consists in a high efficiency DC/DC converter and a fan cooler. The converter is aimed at providing a variable DC power supply to the SMD10 dual-edge pulse sharpener module. Because the internal pulse generator of the SMD10 operates from this voltage, the amplitude of its output pulses
can be controlled via the SMD20 module. Thus, with a DC output voltage ranging from +5V to 30V, the SMD20 allows the user to control the amplitude of the pulses over the same range.
Since the SMD10 Dual-Edge Pulse Sharpener module has to dissipate 5W, a fan cooler is mounted on the board of the SMD20 module to force ventilation of the pulse generator amplifier. Of course, to operate the heat-removing properly, the SMD20 module has to be installed on the right side of the pulse shaper module.
The SMD20 allows the user to control the fan cooler and the DC output using serial command through the SPI port. Regulator fault detection and voltage monitoring signals are also available to help the user to
ensure a safe operation of the module.

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External Links

SMD10 Aiguilhe – Dual-Edge Pulse Sharpener

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Features

  • User controlled pulse edge sharpener
  • Sub-nanosecond rise- and fall-time
  • 300-ps pulse width
  • High repetition rate (10 MHz)
  • +5 V to + 30 V amplitude
  • EMI noise immunity
  • Ideal for rapid and reliable prototyping

Contact Sisyph

Output Pulse at 10-MHz repetition frequency

Applications

  • Stroboscopic magnetic imaging TEM

Overview

The modules of the SMD-Series provide the experimentalists a complete line of instruments for the generation of short pulses at high repetition rates. First designed for stroboscopic magnetic imaging TEM (Transmission Electron Microscope), the SMD-Series offers a complete solution to deliver sub-nanosecond pulses into 50-loads at repetition rates ranging from DC to 10MHz.
The SMD10 Aiguilhe module mainly consists in a fixed-width pulse generator and a dual-edge pulse sharpener. The pulse generator, triggered via the input signal, delivers a high-voltage pulse to the edgessharpener.
This stage, consisting of two charge-controlled switches, allows the user to reduce both leading and trailing edges of the high-voltage pulse. The switching characteristics of the charge-controlled devices are adjusted through their bias currents using serial commands. The edges-sharpener output accessible on
the front panel is also coupled to secondary outputs for synchronization and monitoring purposes.
Gathering other SMD-Series modules, the SR500 Pulse Generator is the ideal solution to generate highvoltage sub-nanosecond pulses at high repetition rate (10MHz) for stroboscopic magnetic imaging TEM.
With the additional SMZ320 Serial Interface module, the SR500 gives the user a complete control of the pulse generator over USB or optical interfaces.

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SMC11 Puy Mary – Ultra Low Noise Current Source

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The lowest noise, highest bandwidth of any commercially available products

Features

  • 210mA or 470mA source
  • Ultra-low current noise
    • density  ≤ 15 pA/√Hz
    • RMS  ≤ 25 nA
  • Adjustable current limiter
  • Fast servo modulation input (30 MHz)
  • RF modulation input
  • Slow turn-on
  • Analog design – Free of digital noise
  • EMI noise immunity
  • High reliability
  • Ideal for RIO Planex™, DFB and VCSEL lasers.
  • 3D models

Noise Performance

Noise performance comparisons between the SMC11 and some “low-noise” competitors.

Transfer Function

Applications

  • For use with grounded anode laser (telecom diodes)
  • Laser frequency stabilization
  • Opto-electronic oscillator (OEO)
  • Optical Phase-locked loop (OPLL)
  • LIDAR applications
  • Photonics
  • Atomic Physics
  • Ideal for RIO Planex™ Lasers

Overview

The SMC-Series modules are the ideal instruments for controlling the current and the temperature of narrow linewidth laser diodes. With an ultra-low noise current sink (SMC11) and sub-mK thermal control stability (SMC20 & SMC31), the SMC-Series is the right choice for the most demanding applications. Because SMC-Series was first designed for frequency stabilization and OPLL applications, the SMC11 current sink also provides two current modulation inputs since ultra-low noise current and fast current modulation are key parameters for achieving the best phase noise performance of your stabilized lasers. Using the SMC-Series laser diode controller with the SMA– or SMB-Series modules, complete turn-key solutions are available for your laser frequency stabilizations or phase-locked lasers.

Related Modules

The SMC11 is the current source module of our SMC-Series modules. It is intended for anode-grounded [1,4] lasers diodes (e.g. most of telecom devices). Because the SMC11 is a minimalistic [5] module designed to be used in different situations [2], some external control signals are necessary to operate the current source. For this purpose, 2 optional modules – SMC111 and SMC121 – are provided to manually access and control these I/O signals. The SMC111 module is a 11-toggle switch interface used to control the status of one SMC11 current source and one thermal stabilization (SMC20 & SMC31 modules) while the SMC121 BNC interface module allows the user to access the I/O signals of the current source (Interlock, Current Monitor, Remote Control etc).

Since noise is a primary concern, the SMC11 current source does not include any power supply generator on its board. The required DC power supply voltages (+/-15V and +5V) must be fed to the current source through its stacking connectors. The SMZ00 power interface module has been designed to provide a safe and reliable way to connect the power supplies to the stacked modules. It features both reverse voltages protections and surge currents limitations. In addition, the SMZ00 module includes passive filter stages to remove the conducted noise from power supply sources. The SMZ00 power interface module is connected to the power sources via a 10-conductor cable.

The laser diode is connected to the SMC11 current controller using an SMA coaxial connector located on its front panel. This connection provides the users a convenient way to apply an RF-current modulation without any external bias-tee. Nevertheless, some users just want to replace their noisy current controller with our ultra low-noise source without changing the laser connections. For this purpose, the optional SMC051 module has been designed : it provides both female DSUB9 and DSUB15 connectors to connect the laser using the ILX™ industry standard’s wiring scheme [3].

The laser can be also connected to the SMC11 Current Source without any cables. Indeed, the SMC41 Valescure  is a laser mount module dedicated to telecom laser packaged in butterfly 14-pin cases. With the SMC41 no cable are required to connect the laser to its curent source since the module is connected to the source via the stacking connectors. RF modulation is still preserved.

All these modules are optional but they are recommended since you will have to make your own assembly otherwise. The optional modules can be ordered grouped or separately. Some R&D customers just buy the SMC11 current source and use the board as a sub-system in their designs.

Note that ready-to-use current controllers are provided by the SR300-Series solutions.

Mounting the Current Source Module

To increase their flexibility, all SM-Series modules are designed to be assembled in standard cases (19″ or less) and as sub-systems. For a standard 3U (128.4mm height) case assembly, the modules can be ordered with their front panels, which fix the modules to the case.

For ultimate performance, we also provide shielded desktop cases and low-noise power supplies. Since our SM-Series modules are rack compatible, you can also mount these instruments in any 3U-case of your choice.

You can see how the SMC-Series looks like without any case (see picture in Included Hardware Section). Here, the user is free to mount the stacked modules in his own standard 3U-height case and connect the power supply using the power cable (not shown on the picture). Note that no expensive mother board is required to assemble the modules since they have their own stacking connectors. It is possible to assemble more than one diode laser electronics in full-width 84HP (19″) 3U-height case. Hence, 2 complete diode drivers can be mounted but additional modules from other series (laser stabilization for example) can be also accommodated together. Using a 3U/84HP (19″) case also provides the user to mount his own sub-systems in a same case.

Power requirements

Regarding the power supplies, we can provide low-noise power supplies [6] but, due to the efficiency of our modules, any good laboratory power supply (+/-15V & +5V) will be perfectly adapted, the noise increase should be marginal.

Ready-to-Use Current Sources

The SR300 shows a typical configuration where a standard 3U/42HP (half-19″ width) desktop case accommodates modules of the SMC-Series (the temperature controller modules are also visible on this picture). This case requires DC power supply inputs (+/-15V and +5V), which can be provided by any low-noise power supply or by the SR100 power supply [6].

  • [1] Of course, laser diodes with floating terminals can be also controlled.
  • [2] The SMC11 can be used as a sub-system in a customer specific design.
  • [3] The DSUB9 connector is connected to the SMC11 current source and the optional thermal stabilization modules (SMC20 & SMC31) are connected to the DSUB15.
  • [4] Contact us for any questions regarding the compatibility.
  • [5] A block-diagram can be downloaded from the web page (see Download Section).
  • [6] This power source was first designed to provide low-noise environment for our products.

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Examples of compatible Laser Diodes

Non-exhaustive list, contact us for specific information.

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Additional Views

The SMC11 Puy Mary Current Source module (front panel not shown).

SR100 Estélas Low-Noise Power Supply

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Features

  • 42HP/3U desktop case
  • 230V or 115V AC input
  • Chassis isolated outputs
    • +5V/2.2A
    • +15V/2.2A
    • -15V/2.2A
    • +24V/1A
  • High control accuracy – low residual ripple
  • Linear control – low EMI
  • High reliability
  • Ultra-low voltage noise
    • density  ≤ 100 nV/√Hz
    • ripple  ≤ 1mV RMS

Applications

Overview

The SR100 Estélas is a low-noise power supply providing ±15V and +5V and optionally +24V. The SR100 was first designed to provide a quiet environment to operate our ultra-low noise laser current sources (SMC-Series). For this purpose, three SPS20 Cagire modules are assembled in a 3U desktop case to power up to 2 complete laser diode controllers and their dedicated laser frequency control electronics (SMA– and SMB-Series for instance). Because they have little to no ability to reject supply variations, many RF subsystems should also benefit from the low-noise features of the SR100 Estélas to prevent unwanted side bands and low signal-to-noise ratio.

Two standard configurations are available : the SR103 features three DC outputs (+5V and +/-15V)  while the SR104 provides an additional +24V output. Contact us for custom configurations. The mains input voltage selection is set at factory and should be specified along with the DC output configuration.

The DC output voltages are available at the front panel through 4 pairs of 2-mm banana jacks. These connectors are dedicated to prototyping only since powering Sisyph’s Reference solutions should use the DSUB connectors located on the rear panel of the case.

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SPS20 Cagire Low-Noise AC/DC Power Supply

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Features

  • 3U – 100mm x 160mm
  • Occupied width: 10HP (50.8mm)
  • 230V or 115V AC input
  • Chassis isolated output
  • DC output: 4 options
    • +5V/2.2A
    • +12V/2.2A
    • +15V/2.2A
    • +24V/1A
  • Low EMI : toroidal transformer & linear control
  • High reliability:
    • Current limiter
    • Overvoltage crowbar protection
    • Inrush current limiter
    • Thermal shutdown.
  • Low voltage noise
    • Density  ≤ 100 nV/√Hz
    • Ripple ≤  1mV RMS
  •  Connection: 2 options
    • DIN41612 H15
    • PCB terminal blocks (Cage Clamp™)
  • 3D models available

Contact Sisyph

SPS20 Cagire modules w/ DIN41612-H15 (right) or Cage clamp terminal blocks (left). Front panel not shown.

Applications

  • Low-noise DC power supply
  • Laser frequency stabilization
  • Opto-electronic oscillator
  • OPLL – Phase-locked lasers
  • Ultra-low noise current controller
  • Laser diode controller
  • RF noise sensitive prototyping

Overview

The SPS20 Cagire is a low-noise power supply based on a linear AC/DC converter. It was first designed to provide a quiet environment to operate our ultra-low noise laser current source (SMC-Series). For this purpose, three SPS20 modules are assembled in a 3U desktop case (SR100 Estélas) to power up to 2 complete
laser diode controllers and their dedicated laser frequency control electronics (SMA– and SMB-Series).
Because they have little to no ability to reject supply variations, many RF subsystems should also benefit from the low-noise features of the SPS20-Series to prevent unwanted side bands and low signal-to-noise ratio.

The SPS20 Cagire’s output  is protected against short-circuit using an adjustable current limiter. An overvoltage crowbar is also added on the output to provide ultimate protection of the loads. The SPS20 Cagire can be remotely controlled (on/off) using its dedicated isolated input. For more information refer to the functional block diagram.

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Additional Views

SPS20 Cagire module : front view (left) and bottom view (right). Front panel not shown.

Rear views for the Cage Clamp™ terminal blocks option (left) and DIN41612-H15 option (right). Front panel not shown.

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SZ310 – Powered Desktop Case

Uncategorized

Features

  • Power system
    • Low-noise linear AC/DC power supplies
    • +24V/1A – SPS20 module (optional)
    • +5V/3A – SPS20 module
    • +15V/1.5A – SPS20 module
    • -15V/1.5A – SPS20 module
    • Internal AC power distribution terminal blocks
    • Internal DC power distribution terminal blocks
    • Optional module allows powering of a second case
  • 19″/3U Desk-top Case
    • from desk-top to rack-mounted case and back
    • EMC shielding
    • Ventilation slit in base plane
    • Rear-panel perforated
    • Blank panels provided
    • Narrower cases available
  • Easy integration of custom boards and sub-systems

Contact Sisyph

Overview

The SZ310 Powered Desktop Case is the platform on which SM-Series modules and Reference Solutions are assembled. It was designed to easy accomodate both SM-Series modular instruments and customer specific sub-systems in a shielded desk-top case. Contact us for customized solutions.

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SR300 Estérel- Laser Diode Controller Electronics

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The lowest noise, highest bandwidth and most flexible of any commercially available products

Overview

The SR300 is the ideal instrument for controlling the current and the temperature of diodes laser. Including ultra-low noise current sink, sub-mK temperature controller and modulation inputs, the SR300 is the right choice to meet the requirementsof the most demanding applications. The SR300 hardware is based on the modular instruments of the SMC-Series Diode Laser Controller, which can be also ordered separately.From modular instruments to complete turn-key solutions, Sisyph provides flexible and high-performance electronics for cutting-edge research and engineering.

Applications

  • Photonics, Lidar
  • Opto-electronic oscillators
  • Time-frequency standards
  • Optical phase-locked loops
  • Inertial navigation
  • Atomic clocks
  • Cold-atom physics
  • Quantum computing
  • Gravity measurements
  • Ideal for RIO™ Planex and DFB lasers

Example of a dual-current source for Lidar R&D.

Related Hardware

SR301 Ultra-Low Noise Current Controller

The SR301 is an ultra-low noise current controller based on the SMC11 Current Source module. It provides the user with a ready-to-use laser diode driver. The SR301 does not include the thermal stabilization but the related modules can be mounted afterwards.

An SR301 unit mounted in a small 3U/28HP shielded case. Wider cases are also available to accommodate several units.

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SR21 – OPLL Locking Electronics and Laser Controllers

Uncategorized

This configuration includes:

  • SR20 OPLL – Locking Electronics (x1)
  • SR30 Laser Diode Controller (x2)
  • For optional 3U/19″ enclosure, refer to XXX.
  • For optional 3U/19″ powered enclosure, refer to XXX.
  • For optional laser diodes drivers (slave and master), refer to XXX.
  • from
  • Low-noise +24V/+15V/-15V/+5V power supplies
  • High EMI immunity
  • Shielded 3U-19″ enclosure ( (42HP and 63HP widths are also available)
  • All schematics and C sources files included
  • from 4500 EUR

SMC112 Uzès – Temperature Controller BNC Interface

Uncategorized

Features

  • For use with SMC20 Temperature Controller
  • 4 BNC for control and diagnostic
    • Error monitor
    • Setpoint input
    • Current Control input
    • TEC Current monitor
  • 1 spare BNC connector
  • EMI-noise immunity
  • 3D Models

Contact Sisyph

Front panel not shown

Applications

  • Laser frequency control
  • Phase-locked lasers
  • Diode laser remote control
  • Ideal for rapid prototyping

Overview

In order to keep our SM-Series modules compact, only essential interface components are located on a front panel.

Nevertheless more control features are always available accessing the internal busses of a specific module. For a customized application, the SMZ110 and SMZ120  modules provide a convenient way to access any of these signals.

Based on the SMZ110, the SMC112 module is dedicated to the SMC20 Temperature Controller. It accomodates 5 BNC connectors for control, diagnostic or monitor purposes.

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Additional Views

Front panel not shown

SMC121 Mayres – Switch Interface

Uncategorized

Features

  • Manual control of
  • 3 dedicated Current Source switches
    • Run Laser/Shorted
    • Remote/Local Setpoint
    • 1 spare switch
  • 8 dedicated Temperature Controller switches
    • Controller ON/OFF
    • Constant Current/Temperature mode
    • Remote/Local Command
    • Servo input ON/OFF
    • Remote/Local Temperature Setpoint
    • Loop Polarity selector
    • 2 spare switches
  • EMI-noise immunity
  • 3D models

Contact Sisyph

Applications

  • Laser frequency control
  • Phase-locked lasers
  • Diode laser remote control
  • Ideal for rapid prototyping

Overview

In order to keep our SM-Series modules compact, only essential interface components are located on a front-panel.

Nevertheless more control features are always available accessing the internal busses of a specific module. For a customized application, the SMZ110, SMZ120 and SMZ130 modules provide a convenient way to access any of these signals.

Based on the SMZ120, the SMC111 module is dedicated to the SMC11 Puy Mary Low-Noise Current Source and SMC20 Temperature Controller. With the SMC121, the user can manually  control the operation of the diode laser in most applications.  It should be noted that remote control is still allowed when SMC121 is used.

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Additional Views

Front panel not shown.