Precision Instrumentation For Laser, LED & Thermal Applications

Supporting Scientists and Engineers since 2003

More than

Products in the Field

Arroyo Instruments are trusted by thousands of Engineers and Scientists

More than

years in the Industry

Our team of industry experts are ready to support your next project

More than

Custom Solutions
Our standard configurations can be adapted to meet your project requirements



High precision, low noise, easy to use. Arroyo Instruments solutions become a transparent part of your research process, not another variable you need to manage.


Arroyo Instruments provides the building blocks for your next multi-channel system. Incorporating our proven technology into easy to integrate, rack mounted instruments and modular fixtures.


Arroyo Instruments delivers painless OEM integration with our standalone, fully engineered, and calibrated modules.

Did You Know?

Arroyo Instruments Offer ...

  • 100mA to 100 Amps
  • Low Noise
  • Excellent Precision and Stability
  • Ground Loop Isolation
  • Analog Modulation
  • QCW Operation
  • Active Heating and Cooling
  • High Temperature Configurations
  • Device Specific Wiring Harnesses
  • Copper Cold Plates
  • Cold Plate Customization
  • General Purpose and Device Specific
  • 28W to 960W of TEC Power
  • 0.004C Stability
  • Automatic PID Calculation
  • Build in Fan Controller
  • Resistive Heater Support
  • Bipolar Direct Current Output

Industry Leading Features

Ground Loop

Overlapping Laser

Excellent Stability

Low Noise Laser

High Temperature
Mount Configurations

Simple User

News & Info

Direct Current vs. Pulse Width Modulation

Direct Current vs. Pulse Width Modulation

Temperature control is vital for many applications, and people achieve it in interesting ways. Here is an under-the-hood look at how that is often achieved using direct current or pulse width modulation control and bipolar H-bridge outputs.

Read More »

Laser diode and temperature controller manufacturer

Arroyo Instruments is a laser diode driver and temperature controller manufacturer offering incredibly precise instruments for use in a variety of applications. Engineers and researchers trust Arroyo because our team provides a level of knowledge and expertise unrivaled in the industry. Technology is ever changing, and we keep up with these shifts by shaping our instruments around what scientists and engineers demand.

With over 30 years of experience, our industry experts use their knowledge to ensure our products exceed the most demanding application requirements.   Our instruments offer features such as low-noise current control, temperature control, and ground loop isolation. Arroyo Instruments has worked with engineers from Apple, Google, NASA, and top labs across the globe.

If you have questions about our products, contact our team of professionals for additional information. Order from a laser diode temperature controller manufacturer that prioritizes quality. 

Trusted Worldwide

Contact US

We are passionate about our products, and know that once you try one of our instruments, you’ll never go back. Talk to an Arroyo Engineer Today