NT-MDT NTEGRA Spectra - 1.3.3. Laser beam delivery system

Chapter 1. Basic Information
The screws 1, 2, and 3 provide displacement of the optical tube in the ranges of 11 mm
for corresponding degrees of freedom.
The supporting bracket 4 is screwed on the replaceable panel of the base unit thus fixing
the positioning device.
1.3.3. Laser beam delivery system
Laser beam delivery system (hereinafter – LBDS) (Fig. 1-14) is designed for easy, safe
and secure transfer of the laser radiation to the entrance of the PMT module or to the
sample.
Fig. 1-14. Overall view of LBDS
1 – «Input» socket; 2 – polarization key,
3 – «Output» socket; 4 – cover plugs
Polarization plane of the radiation is defined by the line mark on the Output socket of
LBDS (see
Fig. 1-15). Rotate the socket to the desired position when installing LBDS.
Fig. 1-15. Output socket.
Line mark indicates the polarization plane
Table 1-1. LBDS technical characteristics
Parameter
Value
Fiber type
single-mode
Pigtail length
2÷3 m
Beam diameter at entrance
0.65 mm
Transmission efficiency
> 65 %
Output beam divergence
diffraction limit
Maximum input power
≤ 100 mW
11