Newport N-STP-910 Operating Manual

Single frequency laser

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1791 Deere Avenue

Irvine, California

920606 USA

www.newport.com/contact-us

______________________________________________________________________________________

Single Frequency Laser

Operating Manual

Models N-STP-910, N-STP-912

L10698-1 REV: 03.20.2 NPT

+1 949-863-3144

Newport Corporation

www.newport.com

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Summary of Contents for Newport N-STP-910

Page 1 1791 Deere Avenue Irvine, California 920606 USA www.newport.com/contact-us ______________________________________________________________________________________ Single Frequency Laser Operating Manual Models N-STP-910, N-STP-912 L10698-1 REV: 03.20.2 NPT +1 949-863-3144 Newport Corporation www.newport.com...
Page 2 NOTICE: This manual contains specifications, descriptions, and drawings for the Newport stabilized Helium Neon laser systems. Product specifications contained in this manual are subject to change without prior notice. Newport Corporation will not be responsible for errors or omissions in this manual, or for incidental or consequential damages in connection with the furnishing or use of this information.
Page 3 CLASS 3R LASER PRODUCT (IEC 60825-1:2007) 1mw MAXIMUM AT 632.8nm 5mw MAXIMUM AT 632.8nm COMPLIES WITH CDRH 21 CFR COMPLIES WITH CDRH 21 CFR 1040.10 AND IEC 60825-1:2007 1040.10 AND IEC 60825-1:2007 N-STP-912 N-STP-910 Figure 1-1. Standard Caution and Shipping Labels...
Page 4 5mW continuous radiation at a visible wavelength of 633nm. The Model N-STP-910 conforms to CLASS II (IEC 2), which allows maximum output power of up to 1mW. Other requirements include the use of special labeling, an external mechanical beam attenuator, and a pilot light indication during operation.
Page 5 Check the contents of the shipping container for any signs of damage that may have occurred during transportation. If the contents are damaged, a claim should be filed immediately with the carrier and the Newport sales or customer service department in order to facilitate the repair or replacement 1.2.2.
Page 6 For the N-STP-910, the minimum power will generally be zero. Do not mistake this behavior for the laser turning off.
Page 7 Model N-STP Operation Manual Introduction 1.3.2. Explanation of Controls and Indicators 1.3.2.1. AC/DC Converters Each AC/DC Converter is supplied with an AC cord with proper grounding, along with an ON/OFF switch and a visual indicator light indicating that 15 VDC is available at the male output plug of the converter.
Page 8 Section 1.7. Full counter-clockwise (CCW) adjustment will decrease the output to typically 0.5mW for N-STP-912, to 0.35mW for N-STP-910, or to at least 600MHz from the "red side" of the doppler curve, see Section 1.7. Each direction is torque protected so that over-turning will result in no power change.
Page 9 SHUTDOWN Figure 1-3. Schematic Block Diagram When the SFA is mated to the Models N-STP-910, or N-STP-912 laser head, the output beam passes through two conditioning optics. The polarizer blocks the unwanted mode (“s” component) while allowing the “p” component to pass at a very small attenuation. The beamsplitter samples a portion of the “p”...
Page 10 0.70mW (N-STP-912) or 0.40mW (N-STP-910). By adjusting the power over this range the absolute frequency is also adjusted. In the case of the Model N-STP-912, this output frequency span corresponds to about 50 to 600MHz and for the N-STP-910, it corresponds to about 400 to 600MHz from center-line.
Page 11 Output power of N-STP-912 Tube failure or setting but will not lock at laser head less than 1.15mW or detuned laser tube high setting N-STP-910 laser head is less mirror mount. than 0.7 to 0.9mW (see output power range on certification sheet). 1-11...
Page 12 Operating Specifications Table 1-3. Operating Specifications for Model N-STP Series Electrical Parameter Minimum Typical Maximum Units Model N-STP-910 or N-STP-912 Laser Head (with AC power supply) Input Voltage* 98 or 196 132 or 264 Vrms Input Current* 0.48 Arms Frequency...
Page 13 Minimum Typical Maximum Units Shock Impulse (IEC68.2.27) 30x11 gxmsec Vibration (IEC68.2.6) Warm-up minutes Optical Model N-STP-910 Single Frequency Laser System Parameter Minimum Typical Maximum Units Output Range Power (633 nm), Typical 0.35 0.70 Frequency (v-v o (1) Beam Diameter (1/e 0.48...
Page 14 Introduction Model N-STP Operation Manual Table 1-3. Operating Specifications for Model N-STP Series (cont’d) Optical Model N-STP-912 Single Frequency Laser System Parameter Minimum Typical Maximum Units Output Range Power (633 nm), Typical 0.60 1.40 Frequency (v-v o (1) Beam Diameter (1/e 0.54 Beam Divergence (Full 1.50...
Page 15 Stable/OT LOCK RING RIGHT VIEW TOP VIEW LEFT VIEW Figure 1-4 MODEL DIM A DIM B DIM C N-STP-910 10.20 (259.1) 6.96 (176.8) 72.00 (1828.8) N-STP-912 11.89 (302.0) 8.65 (219.7) 72.00 (1828.8) Figure 1-4. Mechanical Specifications of Models N-STP-910/N-STP-912 1-15...
Page 16 Doppler Output Power/Frequency Function Understanding the basic properties of a specific laser allows the output frequency of the Models N-STP-910 or N-STP-912 system to be accurately tuned over a large portion of the available doppler gain profile. The output power of the Model N-STP-910 or N-STP-912 system as a function of output frequency (v) can be described by the following relationship.
Page 17 Model N-STP Operation Manual Introduction Output Power vs Frequency Curve 1 Curve 2 Frequency from Center-line (MHz) Figure 1-5. Output Power vs. Frequency Normalized Output Power vs. Frequency Curve 1 Curve 2 Frequency from Centerline (MHz) Figure 1-6. Normalized Output Power vs. Frequency Curve 2 depicts the doppler profile that exists at the end of the operating life if n falls to 80% of its original value.
Page 18 1.8. Frequency Calibration As explained in Section 1.7, the Model N-STP-910, N-STP-912, single frequency laser system may be tuned over a wide range of frequencies from center-line. Using a calibration curve, such as the one shown in Figure 1-9, the output frequency can be calibrated to typically better than 10% accuracy of a given frequency on the "Blue"...
Page 19 APPENDIX A: WARRANTY Newport (“Manufacturer”) warrants its products to be free from defects in materials or workmanship for a period of one year from the date of shipment from the factory. The Manufacturer’s liability is limited to replacing, repairing or issuing credit, in our sole discretion, for any products that are returned by the original purchaser during the warranty period and fail to meet specifications.

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