60Spec - PIKE Technologies
Contents
1. PN 350 1216000 02 Page 1 Unpacking Your Accessory In order for you to quickly verify receipt of your accessory we have included a packing list Please inspect the package carefully Contact PIKE Technologies immediately if any discrepancies are found Packing List 60Spec Manual 60Spec Accessory Masks PN 350 1216001 PN 121 6000 PN 121 0502 Quantity 1 Quantity 1 Quantity 2 PIKE 60Spec 60 Degree Specular Reflectance Accessory for UV Vis Spectrophotometers Alignment Mirror PN 300 0039 Quantity 1 PN 350 1216000 02 Page 2 Accessory Description The beam from the spectrophotometer is reflected from the first mirror to strike the sample The angle of incidence of the beam at the sample is engineered to be the angle specified for the particular accessory The reflected beam from the sample is then reflected at the second mirror and passes to the instrument detector The accessory includes a set of two apertures to support small samples and a reference mirror for alignment of the accessory by means of the adjustment screws Sample Position Figure 1 Optical diagram of the 60Spec accessory PN 350 1216000 02 Page 3 Alignment Alignment of the accessory is required only when using the 60Spec for the first time Subsequently the accessory may be used without alignment The procedure is a two step process a visual alignment using the white light from the spectrophotometer followed by fine tuning using th2. 2013 by PIKE Technologies Inc Madison WI 53719 Printed in the United States of America All world rights reserved No part of this publication may be stored in a retrieval system transmitted or reproduced in any way including but not limited to photocopy photograph magnetic or other record without the prior written permission of PIKE Technologies Inc Address Comments to PIKE Technologies Inc 6125 Cottonwood Drive Madison WI 53719 Phone 608 274 2721 Fax 608 274 0103 E mail info piketech com Web Site www piketech com January 2013 Contents Introduction Unpacking Your Accessory Packing List Accessory Description Alignment Visual Alignment Fine Tuning Alignment Performance Verification Acceptance Criteria Using Your Accessory Reflectance Spectra and Applications Precautions Mirrors Replacement Parts and Options O J MD a UO A Bl INI NI e el e e oO O O Introduction For use in UV Visible spectrophotometers the PIKE Technologies fixed angle specular reflectance accessories are simple easy to use accessories that mount into the standard sample slide of all spectrophotometers equipped with an optional 2 x 3 sample slide holder The design enables samples to be analyzed quickly in reflectance mode Some analyses that may be performed with this accessory include the measurement of sample reflectance and the analysis of coatings on metallic surfaces This user manual covers the 60Spec
3. Figure 8 Laser mirror measured using the 60Spec alignment mirror as a background A Note on Reflectance Data of gt 100 R When measuring a dielectric mirror with 99 absolute reflectance using a metal mirror with 91 absolute reflectance as the 100 baseline will result in reflectivity values above 100 In this example the measured reflectivity would be 109 PN 350 1216000 02 Page 9 Precautions Mirrors To provide the maximum transmission in the UV Vis with minimum spectral interferences the mirrors used in this device are uncoated bare aluminum on a glass substrate Since the coatings are soft care must be taken to avoid damage Normally these mirrors will not need cleaning since they are contained within the housing of the accessory If they do need cleaning they may be gently wiped with a lint free abrasive free cloth such as lens tissue or with a camel hair brush Under no circumstances must the mirrors be rubbed with paper products such as Kleenex or Kimwipes since this will scratch the mirror coating Replacement Parts and Options Part Number Description 121 0502 Mask Set 300 0039 Alignment Mirror PN 350 1216000 02 Page 10 PIIKE TECHNOLOGIES Spectroscopic Creatit ity 6125 Cottonwood Drive Madison WI 53719 5120 608 274 2721 TEL 608 274 0103 FAX info piketech com www piketech com
4. Installation and User Guide TECHNOLOGIES Spectroscopic Creativity l PIKE 60Spec 60 Degree Specular Reflectance Accessory for UV Vis Spectrophotometers The information in this publication is provided for reference only All information contained in this publication is believed to be correct and complete PIKE Technologies Inc shall not be liable for errors contained herein nor for incidental or consequential damages in connection with the furnishing performance or use of this material All product specifications as well as the information contained in this publication are subject to change without notice This publication may contain or reference information and products protected by copyrights or patents and does not convey any license under the patent rights of PIKE Technologies Inc nor the rights of others PIKE Technologies Inc does not assume any liability arising out of any infringements of patents or other rights of third parties This document contains confidential or proprietary information of PIKE Technologies Inc Neither this document nor the information herein is to be reproduced distributed used or disclosed either in whole or in part except as specifically authorized by PIKE Technologies Inc PIKE Technologies Inc makes no warranty of any kind with regard to this material including but not limited to the implied warranties of merchantability and fitness for a particular purpose Copyright 1991
5. e alignment mode on the spectrophotometer Visual Alignment 1 Slide the 60Spec accessory into the sample holder It is recommended the accessory is placed on the right hand side of the sample compartment if possible 2 Turn on the white light of the spectrophotometer for alignment purposes 3 With the aperture mask removed place a small piece of paper along the accessory slightly over the center line of the sample position Using a small Post It note is convenient Adjust the three screws located on the bottom of the accessory to optimize the position of the white light to be in the center of the sample position Adjustment Screws Figure 2 Post It note placed over the center line Figure 3 Bottom view of 60Spec and of the sample position of the 60Spec accessory adjustment screws 4 Remove the small piece of paper and replace it with a mirror Cover slightly more than half of the detector port with the small paper to confirm the white light is positioned in the center If it is not go back to step 3 and readjust until the light position is in the center If you need to make significant PN 350 1216000 02 Page 4 changes to the alignment to center the beam on the detector you should go back to step 3 and follow an iterative process between steps 3 and 4 to align the beam correctly in both locations Figure 4 Post It note placed over detector port in a spectrophotometer Fine Tuning Alignment 1 Gotothe alignm
6. ent mode in the spectrophotometer control software Final alignment using the detector energy signal requires the use of green light to avoid saturating the detector 2 Place the mask on the accessory The slit should be aligned on the accessory with the longest length spanning the length of the accessory body as shown in Figure 5 below Figure 5 Proper placement of the mask on the accessory PN 350 1216000 02 Page 5 3 Place the aluminum surfaced alignment mirror face down on the accessory mask 4 Adjust the three screws in the bottom of the accessory to maximize the UV Vis transmission Turn all three screws clockwise by the same amount 1 4 turn If the signal decreases turn all three screws counter clockwise by twice the amount to increase the signal Performance Verification Among the spectrophotometers the beam of the instrument may be collimated or focused beam The collimated beam is not significantly changed by the increased beam path caused by the 60Spec The beam is almost the exact size and shape of the mask supplied with the 60Spec With a focused beam the beam is diverging when it reaches the mask The effect is to lose some energy at the mask Also the elongation of the diverging beam may result in an expanded beam geometer greater than the area of the collector lens on the detector housing The recommended configuration is to place the accessory in a slide holder positioned at the extreme right side of the sample c
7. es Please have the serial number of your accessory available This number is found on the rear of the accessory Figure 6 Energy throughput spectrum of the 60Spec Using Your Accessory To collect a spectrum with your 60Spec accessory perform the following steps 5 Collect a baseline 100 R spectrum by using the alignment or another suitable mirror placed over the mask 6 Place the sample face down on the 60Spec mask The slit should be aligned on the accessory with the longest length spanning the length of the accessory body as shown in Figure 5 7 Scan the spectrum according to instructions provided with your UV Vis spectrophotometer PN 350 1216000 02 Page 7 uv Q c ld QU 9 3 ol oN 400 450 500 550 600 650 700 Wavelength nm Figure 7 Example spectrum of gold surfaced mirror using 60Spec for UV Vis spectrophotometers using the alignment mirror as a background PN 350 1216000 02 Page 8 Reflectance Spectra and Applications Specular reflectance spectroscopy is used to measure the reflectivity of substrates or optical components and coatings on such substrates The following spectrum is an example of a laser mirror measured in the UV Vis spectral region using the 60Spec specular reflectance accessory Prior to data collection a baseline was collected using the alignment mirror 100 90 80 70 60 50 Reflectance 40 30 20 10 300 400 500 600 700 800 Wavelength nm
8. ompartment In this position the focal point of the beam is slightly below the mask in the accessory and the beam is only slightly occluded by the mask There may still be some loss of light due to expansion of the beam beyond the dimensions of the detector lens The expanded beam will not impact the validity of experimental results however as it will be the same in both baseline and sample spectra and thus accounted for consistently in the measurement Acceptance Criteria for Installation of the Accessory 1 Set your spectrophotometer to scan mode 2 Setup a scan between 400 nm and 700 nm with a spectral bandwidth of 2 nm a data interval of 1 nm and a scan speed of 600 nm min 3 Remove the accessory from the sample compartment close the sample compartment door and collect a baseline spectrum 4 Place the 60Spec accessory into the slide holder of the sample compartment and position the alignment mirror face down over the sample position of the accessory With the accessory aligned according to the installation procedure collect a transmission spectrum PN 350 1216000 02 Page 6 5 The throughput value at 500 nm for the 60Spec specular reflectance accessories should be greater than 15 An example of a typical throughput spectrum using the 60Spec collected is shown in Figure 6 If your accessory does not meet this minimum value we recommend realigning the accessory If this does not remedy the issue contact PIKE Technologi
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