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

(Click figure to enlarge)

 Pencil Hg spectrum.jpg

Measured Hg spectrum using PMT

(Click graph to enlarge)

 LEOI-101 Modular Multifunctional Grating Spectrometer.png

Display panel of CCD software

(Click figure to enlarge)

LEOI-101 Modular-3.jpg

Measured spectrum of Sodium lamp

(Click graph to enlarge)

H-D lamp spectrum-656 nm - Copy.jpg

PMT measured spectrum of Hydrogen-Deuterium lamp around 656 nm

(Click graph to enlarge)

H-D lamp spectrum-656 nm-CCD.jpg

CCD measured spectrum of Hydrogen-Deuterium lamp around 656 nm

(Click graph to enlarge)


LEOI-101 Modular Multifunctional Grating Spectrometer/Monochromator

LEOI-101 Modular Multifunctional Grating Spectrometer/Monochromator

Note: computer not included

Features

  • Replaceable gratings for different spectral range and resolution needs

  • Modular structure

  • Configurations of both monochromator & spectrometer

  • Two detectors included (photomultiplier and CCD)

  • Optional fiber optic adapters and cuvette holders




Introduction

This spectrometer/monochromator is designed to help students understand the concepts of light and wave phenomena and learn how a grating spectrometer/monochromator 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. It is also a valuable analytical tool for the studies and characterizations of optical filters and light sources. By dismounting the CCD device from the machine, it is the configuration of a monochromator with high wavelength accuracy. This instrument uses a sine mechanism for wavelength scanning.

 

Using optional cuvette holders, absorbance of various samples in a standard cuvette can be measured; using optional fiber optic adapters, both entrance and exit slits of the spectrometer can be converted to accommodate fiber optic devices. 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

* Grating A is the 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 7/8/10, 32/64-Bit Systems)1
Optional Cuvette Holder with Dovetails (p/n: DF-1)1
Optional Cuvette Holder with Fiber Optic Connectors (p/n: DF-3)1
Optional Fiber Optic Adapter to Entrance Slit (p/n: FA-SMA-1)1
Optional Fiber Optic Adapter to Exit Slit (p/n: FA-SMA-2)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

(Click figure to enlarge)

 Pencil Hg spectrum.jpg

Measured Hg spectrum using PMT

(Click graph to enlarge)

 LEOI-101 Modular Multifunctional Grating Spectrometer.png

Display panel of CCD software

(Click figure to enlarge)

LEOI-101 Modular-3.jpg

Measured spectrum of Sodium lamp

(Click graph to enlarge)

H-D lamp spectrum-656 nm - Copy.jpg

PMT measured spectrum of Hydrogen-Deuterium lamp around 656 nm

(Click graph to enlarge)

H-D lamp spectrum-656 nm-CCD.jpg

CCD measured spectrum of Hydrogen-Deuterium lamp around 656 nm

(Click graph to enlarge)


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