Physics Lab Equipment

 LEOI-101 Modular Multifunctional Grating Spectrometer.pngSchematic diagram

S1: Entrance slit

M1: Plane mirror 

M2 and M3: Spherical mirrors 

G: Grating

S2: PMT 

M4: Folding mirror

S3: CCD


 LEOI-101 Modular Multifunctional Grating Spectrometer.pngDisplay panel of PMT software


 Pencil Hg spectrum.jpg

Measured Hg spectrum using PMT


 LEOI-101 Modular Multifunctional Grating Spectrometer.png

Display panel of CCD software


 LEOI-101 Modular-3.jpg

Measured spectrum of Sodium lamp


 LEOI-101 Modular-4.jpg

Spectrum of Hydrogen-Deuterium lamp


LEOI-101 Modular Multifunctional Grating Spectrometer

LEOI-101 Modular Multifunctional Grating Spectrometer

Note: computer not included

Features

  • Replaceable gratings for different spectral range and resolution needs

  • Modular structure

  • USB interface

  • Two detector modes (photomultiplier and CCD)









Introduction

This spectrometer is designed to help students understand the concepts of light and wave phenomena and learn how a grating spectrometer works. By replacing the default grating in the spectrometer with a different grating, the spectral range and resolution of the spectrometer can be altered. The modular structure provides flexible solutions for spectral measurements under photomultiplier (PMT) and CCD modes, respectively. Emission and absorption spectra can be measured. It is also a valuable analytical tool for the studies and characterizations of optical filters and light sources.

 

To calibrate the spectrum of a selected work window in CCD mode, at least two standard spectral lines are needed within the spectral range of the work window.


Specifications

DescriptionSpecifications
Focal Length500 mm

Wavelength Range

Grating A: 200 ~ 660 nm; Grating B: 200 ~ 800 nm
Slit Width0~2 mm adjustable with a reading resolution of 0.01 mm
Relative ApertureD/F=1/7

Grating

Grating A*: 2400 lines/mm; Grating B:1200 lines/mm
Blazed Wavelength250 nm

Wavelength Accuracy

Grating A: ± 0.2 nm; Grating B: ± 0.4 nm

Wavelength Repeatability

Grating A: ≤ 0.1 nm; Grating B: ≤ 0.2 nm
Stray Light10 -3

Resolution

Grating A: ≤ 0.06 nm; Grating B: ≤ 0.1 nm
Photomultiplier Tube (PMT)

Wavelength Range

Grating A: 200 ~ 660 nm; Grating B: 200 ~ 800 nm
CCD
Receiving Unit2048 cells

Spectral Response Range

Grating A: 300 ~ 660 nm; Grating B: 300 ~ 800 nm
Integration Time88 steps (each step: approximately 25 ms)
FilterWhite filter: 320~ 500 nm; yellow filter: 500~ 660 nm
Dimensions560×380×230 mm
Weight30 kg

* Default grating pre-installed in spectrometer.


Parts List

DescriptionQty
Grating Monochromator1
Power Control Box1
Photomultiplier Receiving Unit1
CCD Receiving Unit1
USB Cable1
Filter Set1
Power Cord3
Signal Cable2
Software CD (Windows 7, 32/64-Bit Systems)1


 LEOI-101 Modular Multifunctional Grating Spectrometer.pngSchematic diagram

S1: Entrance slit

M1: Plane mirror 

M2 and M3: Spherical mirrors 

G: Grating

S2: PMT 

M4: Folding mirror

S3: CCD


 LEOI-101 Modular Multifunctional Grating Spectrometer.pngDisplay panel of PMT software


 Pencil Hg spectrum.jpg

Measured Hg spectrum using PMT


 LEOI-101 Modular Multifunctional Grating Spectrometer.png

Display panel of CCD software


 LEOI-101 Modular-3.jpg

Measured spectrum of Sodium lamp


 LEOI-101 Modular-4.jpg

Spectrum of Hydrogen-Deuterium lamp


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