Home > Laser Diode Drivers > OsTech > LDI-726
High Power Benchtop Laser Diode Driver, Advanced Multi-Level Laser Diode Protection, 20 Amps / 30 Volts Driver Range
$3695.00 sku / item#: LDI-726 ships: Request a Quote for Current Ship Date
Key Features
- Laser diode driver ranges: 20 Amps, 30 Volts
- Advanced multi-level protection features to safeguard your laser diode:- Soft-start current ramp - Current & temperature limits- Power surge & ESD clamp circuit- Transient suppression filters
Product Warranty
All products purchased from Laser Lab Sourceare sold with a full one-year warranty. See terms & conditions for full details.The Laser Lab Source group websites include:- LaserDiodeSource.com
- LaserLabSource.com
- LaserDiodeControl.com
Price and Delivery Quote
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Select Cables and Accessories for this Controller
This cable is also available terminated on the
controller end with a 15-pin d-sub connector (male) and
15-pin d-sub connector (female) on the device-end (kab-231).
This cable is also available terminated on the
controller end with a 15-pin d-sub connector and
unterminated on the device-end (kab-39).
This cable is also available terminated on the controller
end with a 2W2 d-sub connector (male) and a
2W2 d-sub connector (female) on the device end (kab-297).
This cable is also available terminated on the controller
end with a 2W2 d-sub connector (male) and unterminated
on the device-end (kab-286).
Technical Questions for this Product
ASK AN ENGINEERCustomers Also Considered:
MODEL | LDI-726 |
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PRICE | $3695.00 |
LASER DIODE DRIVER output (CURRENT and voltage SOURCE) | |
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INTEGRATED LASER DIODE PROTECTION FEATURES | |
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MODULATION and QCW (Quasi-CW) MODE | |
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AUXILIARY FUNCTIONS AND CONNECTIONS | |
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User INTERFACE and Connectors | |
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DIMENSIONS AND POWER INPUT | |
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Recommended Accessories | |
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Product Overview:
LDI Series Laser Diode Drivers
The LDI series laser diode diode drivers are precision-engineered to electrically bias high power laser diodes while protecting them from the common causes of damage which can potentially harm or destroy semiconductor lasers. Because high power lasers require relatively high levels of DC current and voltage, and generate high levels of waste heat, they have a unique set of electrical and thermal requirements which need to be addressed to protect them from being damaged. Additionally, the driver has been designed with features to assist the user to safely operate the laser diode under test.
Laser Diode Protection Features
These units offer the highest level of commercially available laser diode protection to ensure that your laser is protected from damage. Current and voltage limits, upper and lower temperature limits, and a fast shut-down sequence keep your device protected at all times. The following protection features combine to safeguard your laser diode:
Constant Current Source Laser Diode Driver
The LDI series drivers are based on high stability, low-noise current source topology to ensure optimal performance from your laser diode. They provide exceptionally low drift, allowing for consistent and repeatable results. The constant current source topology is based on a precision sense resistor which is placed in series with the laser diode. The voltage across this sense resistor is fed into a differential amplifier, which compares it to the reference voltage. If the measured current deviates from the setpoint, the feedback loop adjusts the control voltage applied to the pass transistor (MOSFET). The transistor acts as a variable resistor, dynamically adjusting to maintain the desired current. The current source automatically adjusts its output voltage to meet the laser's requirements while keeping the current constant.
Modulation, Internal Function Generator and QCW Modes
In addition to CW (continuous wave) mode of operation, the LDI series laser diode drivers offer flexible modulation capabilities and a built-in QCW function generator. The rear panel of the controller has a BNC input for analog or TTL digital modulation inputs with a 10k Ω input impedance. The controller has an internal function generator which can be used to set the quasi-CW (QCW) pulses. In QCW mode, the user can also set QCW pulses from a remote TTL signal source or by using the internal function generator.
User Interface: Front Panel LCD Display with Keypad (model dependent)| RS232 & USB Interfaces | Analog Signal Controls
These driver & tec controller units offer multiple user interface options. Depending on the model, the user has complete control of all laser diode parameters through an intuitive front panel menu. The front panel has an LCD display with a keypad. For remote control, all models come standard with a RS-232 interface and USB adapter. For all models, the LabView GUI (included) makes set-up and control of the system fast and simple. An open-source terminal software program is also available for download. The user can also control the unit using analog controls signal inputs available on the rear panel.
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