1.5. How can I tune the wavelength of my DL 100
The answer depends on the amount by which you want to change the wavelength. Please note that the ranges given below are guidelines for diodes implemented into the DL 100. Standard diodes can be tuned over about 10nm, while AR-coated laser diodes can be tuned over 50nm and more. Please note also that the gain profile of tapered lasers/amplifiers is usually about 10nm wide,
- 100 kHz - 30Ghz : offset potentiometer on the SC110 unit
- 30 GHz - 10nm : micrometer screw on grating holder.
- 10 nm - 50nm : the grating holder needs to be rotated as a whole (especially relevant for AR-coated diodes). Please refer to the DL 100 manual, part IV, page 29.
- 50 nm - 500nm : a different diode is needed. Please note that it might also be necessary to use different collimation optics and/or another grating whose characteristics match the new diode.
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