Laser Beam Delivery System - NT-MDT NTEGRA Spectra Instruction Manual

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.
Polarization plane of the radiation is defined by the line mark on the
LBDS (see Fig. 1-15). Rotate the socket to the desired position when installing LBDS.
Parameter
Fiber type
Pigtail length
Beam diameter at entrance
Transmission efficiency
Output beam divergence
Maximum input power
Fig. 1-14. Overall view of LBDS
1 – «Input» socket; 2 – polarization key,
3 – «Output» socket; 4 – cover plugs
Output
Fig. 1-15.
Line mark indicates the polarization plane
Value
single-mode
2÷3 m
0.65 mm
> 65 %
diffraction limit
≤ 100 mW
Chapter 1. Basic Information
socket.
LBDS
Table 1-1. technical characteristics
Output
socket of
11