Selectable Wavelength Laser Power Meters

This laser power meter is a must for a wide array of applications, from bio-stimulation to telecommunications. These handheld units have an extremely wide flexibility and are very user-friendly.

Three detector heads are available for laser power measurement – UV (200 to 1100nm), Visible (350 to 1100nm), and Near-IR (800 to 1800nm). In addition to the photodiode heads for individual wavelengths, we offer heads for measuring the output of broadband light sources. The radiometer detector head has spectrally flat response from 400 to 1000nm and therefore can give the true total power of any broadband light source in that spectral region. The photometer head has a spectral response similar to that of the human eye and can therefore make measurements in eye response units of Lux. The photometer head is designed with a small detector where the source overfills the detector. It measures the light intensity per unit area in units of Lux or Foot Candles.

The laser power meter recognizes the pre-calibrated detector head when it is attached. Detector heads can be oriented over a 180° angle and come with an attachable 0.5" dia. x 2.25" L post, 0.875" OD / 0.5" ID post holder, and 3" x 4" sliding base for breadboard mounting. Note: Socket Head Cap Screws not included. Heads also include removable calibration filter.

Functions of the power meter are controlled via menu options on the LCD display that can be controlled by the “Menu” button or three “soft” buttons below the LCD. User navigates through desired menus to select various pre-defined operations. The High Performance version (#58-359) offers the ability to store up to 54,000 data points on-board in 10 files, a high-resolution screen with a selectable digital or analog display, and several additional features.

Menus available include:

• Power Reading: with units and detecting wavelength in nm
• Bar graph: (120 segments) allows user to see relative detected power within specified range
• Offset: Allows user to perform automatic background detection and offset current reading
• Zoom: Allows user to zoom in on mentioned LCD bar graph
• Range: Selectable ranges between Watt and dBm (entire selection listed under specifications)
• Filter: Readings can be taken through a pre-calibrated filter included with each head. Filter transmission curves programmed into meter
• Set %: Percentage of beam being detected can be selected (from 0.001% to 100.000%). Excellent for laser systems involving beam splitters or ND filters
• Powerlog: Charts a graph of laser power between a programmable MIN and MAX value for a specified time
• Tune: Allows for fine tuning of calibration curve
• Average: Allows user to gain average power values at a specified wavelength over a specified time and of a specified type (PERIODIC or CONTINUOUS)
• Wavelength: Allows user to select a wavelength within range of detector head (in 1nm increments)
• Configure: Saves the FILTER, POWER RANGE, and LASER configuration currently selected as default settings
• Cal: Allows calibration of desired wavelength using known power standards
• Info: Displays model and batch number of detector head attached for easy traceability

Meter housing is molded high-impact plastic with kickstand and EMI conductive shielding to allow use in proximity to pulsed lasers. On/off switch on left side. Supertwist LCD display has switchable electroluminescent backlight (active from power charger only), contrast adjustment, and large 12mm digits. User manual and battery charger included. Unit also comes with N.I.S.T. traceable certificate of calibration in accordance with ISO 10012-1.

Optional RS232 adapter for standard meter #55-642 allows a 9600-baud connection between the laser power meter and the user’s computer via a 1.5m long cable. Interface software is included and is LabVIEW® compatible.

Note: Complete system requires a detector head and laser power meter #55-642 or #58-359.