ThorLabs WM100 Omega Meter Beam Profiler
Comes with a manual and what you see in the pictures. If you don't see it, you probably wont get it.
The unit was removed from service in working condition. It powers up and seems to work. It is used, Intel Surplus. There is no sensor/head included, it is just the controller! 2 available, only 1 sold in the auction.

Description:
The WM100 is an easy-to-use, low-cost beam waist analyzer. Using a scanning knife-edge technique, the WM100 calculates the waist size of an input laser beam as defined by the 1/e² intensity points and displays the results on a front panel digital display. An analog output of the beam profile is provided on a front panel BNC to monitor the measured beam. An RS-232 interface included with the WM100 allows remote operation of the instrument.

The principal of operation is based on calculating the beam waist size by measuring the rise-time of the integrated waveform of a scanning knife edge as it passes through the cross-section of the input beam. The linear speed of the knife-edge is simultaneously measured along with the rise time. A microprocessor computes the waist size from the measured rise-time and knife scanning speed, which is displayed on a large LED digital display. The WM100 is fully compliant with the ISO international standard for measuring beam widths.

The WM100 uses a Silicon photo detector to measure beam waist sizes through the wavelength range of 400 to 1000 nm.

Note: The scanning knife edge technique used in the WM100 requires a CW input beam. The WM100 will not work with externally pulsed or mode-locked lasers. Also, excessive intensity noise on the input will lead to erroneous results (DPSS green lasers are notoriously noisy). The PROFILE OUT signal can be monitored to easily check for excessive noise.

Performance Specifications:
Beam Diameter (1/e²): 20 µm to 8mm
Resolution: 2 µm
Accuracy: ±5% of display or ±1 µm (whichever is higher)
Operating Wavelength: 400 to 1000nm
Input Optical Power:
  Dynamic Range: 100:1 (See Note 1 below)
  WM100: 10 µW to 1mW @ peak response (950nm)

Outputs Specifications:
Display: 4-digit, LED
Beam Profile: Single axis, along scan direction, front panel BNC, 0 - 10V
Detector Output: Scaled integrated knife edge, front panel BNC, 0 - 10V
Output Impedance: 600 Ohms

Physical Specifications:
Sensor: Silicon Photodiode
Active Area: 10 x 10mm
Input Aperature: &216;0.5" (12.7mm) dia.
Scan Direction: Capable of rotation through 180°, detent stops at 0, 45, 90, 135, 180°
Input Optics Mount: &216; 0.535-40 Thread (compatible with Thorlabs SM05-series optics mounts.)
Head Mounting: 8-32 Tapped Hole (M4 for WM100-EC)

Remote Interface Specifications:
Protocol: RS-232 (2-wire)
Handshaking: None
Connector: DB9F
Baud Rate: 9600 Baud
Format: 8 Data Bits, 1 Stop Bit, No Parity

General Specifications:
Operating Voltage: 115 VAC / 230 VAC, 50-60 Hz
Operating Temperature: 10 to 40°C
Size: 5.5" x 2.5" x 11.2"

Note 1: The dynamic range of the system is 100:1. To convert this into actual optical input power, the detector  responsivity must be factored in.

For Domestic Customers: Packaging, handling, and order processing included in shipping in all domestic shipments as quoted by the shipping calculator. For International Customers there is a $10.00 minimum for packaging, handling, and order processing. International shipping to be determined by destination.

Prior to shipment I will need to know the following information (filled out on a form that I will send you) for International Customers or Packages/Freight being Forwarded internationally. International customers may also be subject to a freight forwarder form if applicable.:

(1) Are you the end-user of this item?

(2) If you are not the ultimate end-user of the item, please state the ultimate end user's name.

(3) What is the ultimate country destination?

07/13/07