Schäfter+Kirchhoff 60SMF-LSA Series Manual Download

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Adjustment_60SMF-LSA 20.05.2021 © Schäfter+Kirchhoff GmbH

Schäfter+Kirchhoff GmbH Kieler Str. 212 22525 Hamburg, Germany +49 40 85 39 97-0 info@sukhamburg.de www.sukhamburg.com

Figure 14:

Laterally shift the adapter in order to
maximize the radiation that is trans-
mitted by the aperture.

Only a coarse alignment is necessary, which can be done by hand (Figure 14), as the positioning accuracy
must only be a fraction (7 - 10 %) of the collimated beam diameter.

Figure 15:

Finally, fix the adapter and remove the
aperture.

Summary of Contents for 60SMF-LSA Series

Page 1: ...remove all the protection caps first and do not use them as beam dumps risk of photo contamination Notice There is a polymer cap on the receptacle Please perform the following steps in order to remove this cap Figure 1 First remove the cap from the fiber receptacle of the laser beam coupler Figure 2 Then slightly loosen the small pin screw Use the screwdriver 9D 12 Make sure to not loosen it too f...

Page 2: ...beam from reflective objects Do not point the laser beam to other individuals Caution 2 Attaching a Fiber Cable to the Laser Beam Coupler For attaching a fiber cable to the laser beam coupler perform the following steps Figure 3 To prevent damage to the sensitive fiber end face always insert the fiber connector s ferrule A at an angle with the connector key B properly aligned to the receptacle not...

Page 3: ... of the connector with a torque of 0 3 Nm Notice Figure 7 Finally gently tighten the fiber grub screw to reduce the free play of the ferrule in the receptacle The free play in between the connector ferrule and receptacle is only a few microns but necessary for inserting the ferrule without force The tightened grub screw and the right hand orientation rule for the connector ensure a high reproducib...

Page 4: ...lf a Rayleigh length zR away zR π 2 beam 2 λ 8 Here λ is the optical wavelength and Øbeam the collimated beam diameter 1 e2 level Refer to the laser instruction manual for all instructions regarding laser safety Do not stare directly into the laser beam which can cause permanent damage to the eyes Do not stare at the reflected beam from reflective objects Do not point the laser beam to other indiv...

Page 5: ...ukhamburg com 5 Figure 9 Insert the eccentric key type 60EX 4 or type 60EX 5 into the large hole Figure 10 Now adjust the focus setting by ro tating the eccentric key Adjust the collimation by minimizing the size of the laser spot on the target about half the Rayleigh length zR away Figure 11 Finally fix the two grub screws in order to lock the focus setting ...

Page 6: ...Kirchhoff offers an adapter flange which can be moved laterally in oversized holes in order to center the adapter flange to the laser beam Figure 12 Always attach the flange with the recommended washers and spring washers Figure 12 DPSS laser with a 1 x 1 drilling pattern and attached adapter type 60A19 5 F The proper centering of the beam can be tested by attaching an aperture type 13H or a varia...

Page 7: ...de www sukhamburg com 7 Figure 14 Laterally shift the adapter in order to maximize the radiation that is trans mitted by the aperture Only a coarse alignment is necessary which can be done by hand Figure 14 as the positioning accuracy must only be a fraction 7 10 of the collimated beam diameter Figure 15 Finally fix the adapter and remove the aperture ...

Page 8: ...ated in the gap The 19 5 mm system mount of the 60SMF laser beam coupler has a steel ring This steel ring has a gap of approx 2 mm see Figure 17 Please make sure that none of the three pin screw is located in the gap of the steel ring Otherwise the connection in between the adapter and the laser beam coupler and therefore the alignment is not long term stable Attention If a polarization maintainin...

Page 9: ...49 40 85 39 97 0 info sukhamburg de www sukhamburg com 9 Figure 18 The small grub screw has to point into the direction to the polarization axis of the laser dashed line Figure 19 Now fix the three tapered pin screws at the adapter flange please use the same torque of about 0 48 Nm for all three pin screws respectively ...

Page 10: ...stare at the reflected beam from reflective objects Do not point the laser beam to other individuals Caution Measure the coupled light at the opposite end of the fiber cable using a light detector or power meter The detector may have to be adjusted to maximum sensitivity in order to detect a low transmission level possible in the first few coupling steps Perform the following steps Figure 20 Loose...

Page 11: ...p From now on the headed adjustment screws are not used anymore Notice 8 Tilt Adjustment Fine Adjustment and Locking Now the locking screws are used to fine adjust and lock the setting First fasten the three locking screws grub screws Figure 22 E equally with very gentle force until you feel some resistance Use the hex key 50HD 15 The detector at the fiber end now shows a signal but it usually dif...

Page 12: ...ked locking screw F 10 Focussing the Laser Beam Coupler Focus adjustment adjustment of the coupling lens in z direction is a demanding task and should preferably be performed using a collimating telescope The laser beam coupler is shipped pre adjusted for the given wavelength and often it is not necessary for the customer to readjust the coupling lens position This is why you can skip this step in...

Page 13: ...o The polarization axis of the fiber is adjusted by rotating the laser beam coupler Since both laser beam coupler and fiber are connected this means that the fiber polarization axis is rotated with respect to the polarization axis as well The following steps have to be performed only if the laser beam coupler is used with a polarization maintaining fiber cable Notice In order to adjust for the pol...

Page 14: ...40 85 39 97 0 info sukhamburg de www sukhamburg com 14 analyzer such as the SK010PA Polarization Analyzer from Schäfter Kirchhoff Figure 29 Finally fix the three radially arranged pin screws at the adapter Please consider a comparable torque for the three screws and the gap of the steel ring such as described in Chapter 5 ...

Page 15: ... 13 Accessories Figure 30 Adapter type 60A19 5 F Other adapter types are available 14 Adjustment Tools For assembling and adjusting the laser beam couplers series 60SMF you need the following tools Figure 31 Screw driver type 9D 12 hex key 50HD 15 and eccentric key type 60EX 4 or type 60EX 5 Figure 32 Aperture 13H and as an alternative the adjustable iris diaphragm 13BL1 13 ...

Page 16: ...n to pay compensation All rights in the event of granting of patents or registration of a utility model Schäfter Kirchhoff GmbH and the Schäfter Kirchhoff logo are registered trademarks The specifications are subject to change the manual is not covered by an update service The system shown on the photos and drawings of this manual may differ in detail from the system delivered Date of issue 20 05 ...

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