High Resolution Monochromators (640 and 1000 mm focal length)

With the fastest direct drive in this class, FHR 640 and FHR 1000 spectrometers offer a unique combination of speed, precision and high resolution, completely revolutionizing the large spectrometer market. Designed for researchers who require high accuracy with immediate results, the versatility of the FHR allows for utilization over a wide spectral range, extending from the UV to the IR. The instrument’s cast body design eliminates temperature induced stress and expansion, preventing any significant wavelength shifts or signal loss and allowing for optimal performance. These monochromators also benefit from the highest quality of gratings, also designed and manufactured by HORIBA.

Two Focal Lengths to Choose From

FHR 640, 640 mm

FHR 1000, 1000 mm

Benefits

  • Ultra-low stray light rejection of 10-9
  • Excellent for high purity tunable illumination
  • Fully automated
  • Monochromator or imaging spectrograph
  • USB interface

Overview

Single entrance and one or two exits

The FHR640 and FHR1000 are automated Czerny-Turner spectrometers, featuring a 0.64 m focal length (FHR640) and a 1 m focal length (FHR1000). Especially designed for researchers who require high accuracy with immediate results, the versatility of the FHR series allows for utilization over a wide spectral range, extending from the UV range (140 nm) to the IR (depending on the grating and detector used).

The FHR has been designed to minimize any stray light reaching the focal plane. The optical cavity includes blackened baffles and masks to trap unwanted light. In addition, the optical design of the FHR is free from re-diffracted light (re-diffracted light is a source of stray light that involves multiple reflections off the optical components themselves and is therefore very difficult to mask).

FHR Schematic

Hardware

Monochromator Hardware

Slits

The FHR Series has automated motorized entrance and exit slits. In the standard version, each slit may be set between 0–2 mm, and there are optional slits which may be set between 0–2 mm. The slits are internal to the monochromator. A manually adjustable height limiter allows the user to quickly shut or open the light path and also set to a 1 mm height.

You can add accessories to the FHR Series spectrometers to obtain optimum results for a variety of applications. To attach the accessories to the FHR, use the two tapped holes on the body of the height limiter on the outside of the monochromator (shown below). These holes are also useful for connecting the FHR with your experiments and equipment. When connecting with the FHR, it is important to know the distance from the mounting face of the slit’s body to the slits.

Height limiter

Note that some custom accessories require removal of the height-limiter assembly in order to be attached to the FHR chassis. To remove the height-limiter assembly, remove the four screws holding the assembly onto the chassis.

Gratings

World Class Diffraction Gratings Manufactured by HORIBA

A Proud Tradition of Excellence

Since the acquisition by HORIBA of Jobin Yvon, a spectroscopy company founded in 1819, HORIBA Scientific has continued to define the leading edge of the Optics of Spectroscopy.

For the last 40 years HORIBA Scientific has taken a leading position in the design, development and manufacture of master and replica diffraction gratings. HORIBA Scientific diffraction gratings are found in both high volume OEM instruments and in world class cutting edge scientific applications. Our pattern of leadership in optics has been hallmarked by the continuing development of both classically ruled and holographic diffraction grating technologies. This led to the introduction in 1967 of the aberration corrected holographic grating and subsequently ion etched and blazed concave and plane holographic gratings.

The FHR series of spectrometers take full advantage of the highest quality of gratings that HORIBA designs and manufactures..

A Vast Array of Choices

There is a wide selection of gratings to choose from depending on optical requirements. Gratings are 50 x 50 mm for the FHR. There are three different types of gratings available; classically ruled, holographic, and blazed holographic. There is also a flat mirror that may be ordered for the dual grating turret option.

Ruled gratings

Select for applications where high throughput or low groove density is required, or when working in the infrared.  Typically, they have high throughput at the cost of higher stray light. 

Holographic gratings

Available in higher groove densities for finer resolution requirements and are excellent choices for experiments with laser excitation such as Raman or laser induced photoluminescence. They provide the lowest possible stray light possible, sometimes at the cost of lower throughput. 

Blazed holographic gratings

These gratings have the same advantages as holographic gratings with better throughput.

Groove Density

Ruled gratings and blazed holographic gratings have two fundamental parameters to choose from; the groove density, expressed in grooves (or lines) per millimeter, and the blaze angle which nominally refers to the peak reflectance wavelength expressed in nanometers.

The groove density of the selected grating affects the resolution and mechanical scanning range of the monochromator.  Below is a reference chart showing the affect groove density has on the mechanical scanning range of the monochromator as well as the reciprocal linear dispersion of the slits.

Grating Table for FHR 640

Groove Density (gr/mm)

Typical Linear Dispersion (nm/mm)

Mechanical Scan Range (nm)

2400

0.6

0 to 750

1800

0.8

0 to 1000

1200

1.2

0 to 1500

900

1.8

0 to 2000

600

2.4

0 to 3000

300

4.8

0 to 6000

150

9.6

0 to 12000

Grating Table for FHR 1000

Groove Density (gr/mm)

Typical Linear Dispersion (nm/mm)

Mechanical Scan Range (nm)

2400

0.4

0 to 750

1800

0.6

0 to 1000

1200

0.8

0 to 1500

900

1.2

0 to 2000

600

1.6

0 to 3000

300

3.2

0 to 6000

150

6.4

0 to 12000

Below is a comprehensive list of available gratings for the FHR series of monochromators. Other gratings are also available upon request.

Ruled Gratings

Groove Density L/mm

Blaze Wavelength

Recommended Spectral Range

Blaze Angle

Part Numbers

Dual grating, 80x110 mm

Single grating, 110x110 mm

1800

500 nm

250-850 nm

26°45'

510-02-160

510-02-180

1200

330 nm

200-700 nm

11°25'

510-05-160

510-05-180

1200

400 nm

200-800 nm

13°53'

510-06-160

510-06-180

1200

500 nm

250-950 nm

17°27'

510-07-160

510-07-180

1200

750 nm

400-1200 nm

26°45'

510-09-160

510-09-180

1200

1µm

500-1200 nm

36°52'

510-10-160

510-10-180

900

550 nm

250-1100 nm

14°30'

510-93-160

510-93-180

600

750 nm

400-1500 nm

13°00'

510-14-160

510-14-180

600

1µm

500-1700 nm

17°27'

510-15-160

510-15-180

600

1.5 µm

750-2400 nm

26°45'

510-16-160

510-16-180

600

2 µm

1000-2400 nm

36°52'

510-17-160

510-17-180

300

1 µm

700-2000 nm

8°38'

510-20-160

510-20-180

300

2 µm

1100-4500 nm

17°27'

510-21-160

510-21-180

300

3 µm

1700-5000 nm

26°45'

510-22-160

510-22-180

300

4 µm

2000-5000 nm

36°52'

510-23-160

510-23-180

150

1-2 µm

800-2300 nm

5°10'

510-24-160

510-24-180

150

2 µm

1200-4000 nm

8°38'

510-25-160

510-25-180

150

4 µm

2.2 - 9 um

17°27'

510-26-160

510-26-180

150

5 µm

3.5 - 10 um

22°01'

510-27-160

510-27-180

150

6 µm

4 - 10 um

26°45'

510-28-160

510-28-180

150

8 µm

5 - 10 um

36°52'

510 29 160

510 29 180

120

2-5 µm

1.7 - 4.5 um

8°39'

510-30-160

510-30-180

120

5 µm

3 - 10 um

17°27'

510 31 160

510 31 180

120

7-5 µm

4.5 - 12 um

26°45'

510-32-160

510-32-180

100

450 nm

250-950 nm

1°17'

510-48-160

510-48-180

100

3 µm

1.7 - 6 um

8°38'

510-33-160

510-33-180

100

6 µm

3 - 13 um

17°27'

510 34 160

510 34 180

100

9 µm

5 - 14.5 um

26°45'

510 35 160

510 35 180

75

4 µm

2 - 8 um

8°38'

510-36-160

510-36-180

75

8 µm

5.5 - 17 um

17°27'

510 37 160

510 37 180

75

12 µm

8 - 19 um

26°45'

510-38-160

510-38-180

60

15 µm

9 - 24 um

26°45'

510 40 160

510 40 180

50

6 µm

3 - 12 um

8°38'

510-41-160

510-41-180

50

12 µm

8 - 22 um

17°27'

510-42-160

510-42-180

50

18 µm

11 - 28 um

26°45'

510 43 160

510 43 180

50

24 µm

15 - 30 um

36°52'

510-44-160

510-44-180

40

22-5 µm

14 - 30 um

26°45'

510 45 160

Not Available

30

30 µm

N/A

26°45'

510 46 160

Not Available

Holographic Gratings

Groove Density L/mm

Recommended Spectral Range

Part Numbers

Dual grating, 80x110 mm

Single grating, 110x110 mm

3600

150-400 nm

520-07-160

520-07-180

3000

250-450 nm

520-09-160

520-09-180

2400

300-600 nm

520-12-160

520-12-180

2400

170-500 nm

520-13-160

520-13-180

2400

100-300 nm

520 14 160

520 14 180

2000

450-650 nm

520 15 160

520 15 180

2000

190-650 nm

520 16 160

520 16 180

2000

150-450 nm

520 17 160

520 17 180

2000

100-300 nm

520 18 160

520 18 180

1800

450-850 nm

520 -19 -160

520 -19 -180

1800

190-700 nm

520 -20 -160

520 -20 -180

1800

150-450 nm

520 21 160

520 21 180

1800

100-300 nm

520 22 160

520 22 180

1200

400-1200 nm

520 -24 -160

520 -24 -180

1200

190-700 nm

520 -25 -160

520 -25 -180

600

400-1300 nm

520 -29 -160

520 -29 -180

600

150-450 nm

520 30 160

520 30 180

150

250-800 nm

520 32 160

520 32 180

150

400-1200 nm

520 33 160

520 33 180

Blazed Holographic Gratings

Groove Density L/mm

Blaze Wavelength

Recommended Spectral Range

Part Numbers

Dual grating, 80x110 mm

Single grating, 110x110 mm

2400

250 nm

190-600 nm

530-13-160

530-13-180

2400

330 nm

200-600 nm

530-11-160

530-11-180

2400

400 nm

300-600 nm

530-15-160

530-15-180

1800

500 nm

450-850 nm

530 19 160

530 19 180

1800

250 nm

180-650 nm

530-20-160

530-20-180

1800

400 nm

250-850 nm

530-18-160

530-18-180

1200

250 nm

190-450 nm

530-25-160

530-25-180

1200

330 nm

240-800 nm

530-22-160

530-22-180

1200

500 nm

300-1000 nm

530-24-160

530-24-180

1200

630 nm

400-1200 nm

530-27-160

530-27-180

1200

750 nm

500-1200 nm

530-28-160

530-28-180

1200

900 nm

600-1200 nm

530-50-160

530-50-180

950

900 nm

700-1700 nm

530 60 160

530 60 180

900

850 nm

700-1700 nm

530-66-160

530-66-180

600

500 nm

300-1000 nm

530-29-160

530-29-180

600

1000 nm

700-1750 nm

530 34 160

Not Available

Diffraction Grating Calculator

The Diffraction Grating Calculator below can be used to determine the various optical performance specifications of HORIBA spectrometers when used in conjunction with selected spectroscopy cameras, point detectors and various grating alternatives. It is a very useful tool with pull down selections of all of our current spectrometers, cameras and gratings.

Computer Control

In addition to wavelength control the FHR has an optional automated turret control and automated control of the optional internal five position filter wheel.

There are multiple software platforms to choose from for spectrometer control and acquisition.

LabSpec

HORIBA’s world renowned software platform, LabSpec is ideal for most Raman and photoluminescence applications. It offers advanced capabilities, with expert functionality, control and flexibility. LabSpec is the first choice for most spectrometer customers.

SynerJY™

SynerJY™ software is a fully integrated data acquisition and data analysis program for spectroscopic systems. It is selected for custom spectroscopy configurations not suitable for LabSpec.

LabVIEW™

LabVIEW VI’s are now available for the complete line of instrumentation from the Optical Spectroscopy Division, allowing users to work with the LabVIEW™ development package from National Instruments. This option requires proficiency with LabVIEW™ programing.

SDK

Software Development Kits (SDK’s) are available for programmers who wish to write their own software control of HORIBA spectrometers. This option absolutely requires proficiency with programing

Accessories

Compatible Optical Building Blocks

The FHR 180 monochromator is one of many inter-connectable Optical Building Blocks available from HORIBA Scientific. These Optical Building Blocks can be ordered together to form a subassembly or even a complete custom spectroscopy solution.

C-Mount Adapter

The FHR series can be provided with ational C-Mount coupler accessory for the exit port that allows it to be coupled to cameras that use a C-Mount thread. It can also be equipped with an entrance side C-Mount coupler so that it can be directly attached to a microscope with an appropriate C-Mount detection port.

Fiber Light Guides

We offer a selection of fiber optic and liquid light guides to choose from depending on the application.

Lens based fiber-coupler with f/# matching optics for SMA and ferrule (part number 220F, or 220F-AFC for FC Mount fibers).

Direct fiber-coupler with no optics for 10 mm and 0.25″ ferrule with thumbscrew x-y adjusters, (part number AFO-XY)

Mirror based fiber-coupler for 10 mm ferrule (part number J23078640). Contact us for information about SMA and FC adapters.

Simple fiber-adapter for 0.25″ ferrule (part number 120F).

Internal Filter Wheels

The FHR is compatible with the HORIBA AFW-C6PM automated filter wheel. This is a six position motorized filter wheel which accommodates up to six 1" interchangeable filters. Filter selection is software controlled.

Optical Choppers

If you would like to use an optical chopper with your spectrograph/monochromator, then we have a number of solutions. To learn more click here.


Single Channel Detectors

HORIBA offers a comprehensive array of single point detectors for a wide variety of applications in spectroscopy and biomedical research. These are complete detectors including housings, power supplies and facility for cooling if necessary. Used in conjunction with our monochromators and spectrographs these detectors allow you to configure a custom solution for your unique requirements. To learn more, click here.

Spectroscopy Cameras

HORIBA Scientific offers a complete line of spectroscopic multi-channel detectors for scientific research. For spectral detection from UV to near-IR, two dimensional CCDs and indium gallium arsenide linear arrays offer a faster acquisition option over single point detectors with very high sensitivity. Coupled with HORIBA’s range of aberration corrected, flat field imaging spectrographs, custom spectroscopy packages can be assembled for a variety of applications. To learn more, Spectroscopy Camerasclick here.

Broad Band Light Sources

HORIBA Scientific has an excellent selection of broadband light sources. If you would like to couple the spectrograph/monochromator to one of these light sources, then we have adapters to physically connect them and create a tunable illuminator. To learn more about our broad band light sources, Light Sourcesclick here. Incidentally, if you are looking for such a tunable illuminator we have a separate page describing our Tunable PowerArccompact tunable illuminator, and our ultimate KiloArc™ tunable illuminator.

Sample Compartment

If you would like to couple your spectrograph/monochromator to a sample compartment, then we have a number of solutions. To learn more click here.

Specifications

  FHR 640 FHR 1000  
Optical layout Czerny-Turner with optional dual entrance and dual exit ports Czerny-Turner with optional dual entrance and dual exit ports  
Focal length 640 mm 1 meter  
Aperture f/5.4 f/9  
Grating size Single grating: 110 x 110 mm
Dual grating 80 x 110 mm		 Single grating: 110 x 110 mm
Dual grating 80 x 110 mm		  
Reciprocal linear dispersion 1.2 nm/mm using 1200 gr/mm grating 0.8 nm/mm using 1200 gr/mm grating  
Resolution 0.016 nm 0.008 nm  
Slits Automated 0 to 2 mm standard.
Optional automated 0 to 7 mm.		 Automated 0 to 2 mm standard.
Optional automated 0 to 7 mm.		  
Accuracy ±0.03 nm ±0.03 nm  
Repeatability ±0.015 nm ±0.015 nm  
Drive step-size 0.00025 nm 0.00025 nm  
Scan speed 300 nm/s 300 nm/s  
Computer control USB 2.0 built in USB 2.0 built in  
Dimensions (not including adjustable legs) 13.78" (W) × 29.13" (L) × 13.78" (H)
35 cm (W) × 74cm (L) × 35 cm (H)		 16.93" (W) × 45.67" (L) × 13.78" (H)
43 cm (W) × 116 cm (L) × 35 cm (H)		  
Weight 143.3 lbs., 65 kg 154.3lbs., 70 kg