1/8 m Monochromator, Hand Operated, Fixed Slit Assembly

77250B 1/8 m Hand Operated Monochromator

The 77250B-FH is a fully assembled, pre-aligned, Hand Operated Monochromator. The monochromator is based on an Ebert-Fastie design, placing the grating out of the path of the entrance and exit slits to eliminate re-entrant spectra. The hand operated design allows for output wavelength adjustment as accurate as 1 nm via a four digit counter display, with 0.1nm adjustment resolution based on horizontal markings on the counter. The fixed slit assemblies are ideal for general laboratory or academic use, in which a high accuracy and repeatability (especially at high resolution) are desirable. They also provide a cheaper solution than the micrometer adjustable slit version of this monochromator, the 77250B-MC, when only a few slit widths are required. Two slit holders are pre-installed at the input and output ports. Fixed slits ranging from 50 µm to 6.32 mm in width are sold separately and interchangeable, depending on the output resolution desired. The 77250B-FH monochromator base model doesn't include a grating yet. We offer a variety of 77250B diffraction gratings, which are sold separately, covering a wavelength range from 200 nm to 23 µm. They can be easily installed and interchanged, depending on the needs of your application. An optional mounting kit can be purchased separately to mount the monochromator in a setup with an easily adjustable optical axis height to match that of a source and/or detector.

Specifications

Technical Specs

Focal Length
125 mm
Slits
Fixed Slit Holders
Wavelength Accuracy
1 nm (with 1200 L/mm gratings)
Stray Light
0.03 %
F/#
F/3.7
Number of Gratings Supported
1

Wavelength Selection Method
Manual
Optical Height
2.0 inches (50.8 mm) with 77387
Weight
1.8 kg
Resolution
0.1 nm (with 1200 L/mm gratings)

Focal Length
125 mm
Slits
Fixed Slit Holders
Wavelength Accuracy
1 nm (with 1200 L/mm gratings)
Stray Light
0.03 %
F/#
F/3.7
Number of Gratings Supported
1

Wavelength Selection Method
Manual
Optical Height
2.0 inches (50.8 mm) with 77387
Weight
1.8 kg
Resolution
0.1 nm (with 1200 L/mm gratings)

Resources & Downloads

Related Products

Diffraction Gratings

Compare	Description	Compatibility	Avail.	Price
$Diffraction Gratings for 77250 and 77250B Monochromators$	7731077250 Monochromator Grating, Holographic, 3600 l/mm, 300 nm blaze, 250-330 nm	UNIVERSAL	6 Weeks	$520
$Diffraction Gratings for 77250 and 77250B Monochromators$	7730877250 Monochromator Grating, Ruled, 2400 l/mm, 275 nm blaze, 200-500 nm	UNIVERSAL	6 Weeks	$520
$Diffraction Gratings for 77250 and 77250B Monochromators$	7730977250 Monochromator Grating, Holographic, 1800 l/mm, 560 nm blaze, 320-670 nm	UNIVERSAL	Contact Us	$520
$Diffraction Gratings for 77250 and 77250B Monochromators$	7729677250 Monochromator Grating, Holographic, 1200 l/mm, 240 nm blaze, 200-600 nm	UNIVERSAL	In Stock	$520
$Diffraction Gratings for 77250 and 77250B Monochromators$	7729877250 Monochromator Grating, Ruled, 1200 l/mm, 360 nm blaze, 200-1000 nm	UNIVERSAL	6 Weeks	$410
$Diffraction Gratings for 77250 and 77250B Monochromators$	7730677250 Monochromator Grating, Ruled, 1200 l/mm, 750 nm blaze, 475-1000 nm	UNIVERSAL	6 Weeks
$Diffraction Gratings for 77250 and 77250B Monochromators$	7730477250 Monochromator Grating, Ruled, 600 l/mm, 225 nm blaze, 200-400 nm	UNIVERSAL	6 Weeks	$410
$Diffraction Gratings for 77250 and 77250B Monochromators$	7730577250 Monochromator Grating, Ruled, 600 l/mm, 700 nm blaze, 450-2000 nm	UNIVERSAL	6 Weeks
$Diffraction Gratings for 77250 and 77250B Monochromators$	7729977250 Monochromator Grating, Ruled, 600 l/mm, 1000 nm blaze, 650-2000 nm	UNIVERSAL	Contact Us	$410
$Diffraction Gratings for 77250 and 77250B Monochromators$	7730077250 Monochromator Grating, Ruled, 300 l/mm, 1700 nm blaze, 1100-2400 nm	UNIVERSAL	6 Weeks	$410
$Diffraction Gratings for 77250 and 77250B Monochromators$	7731777250 Monochromator Grating, Ruled, 150 l/mm, 800 nm blaze, 425-1600 nm	UNIVERSAL	Contact Us
$Diffraction Gratings for 77250 and 77250B Monochromators$	7730177250 Monochromator Grating, Ruled, 150 l/mm, 4000 nm blaze, 2500-8000 nm	UNIVERSAL	6 Weeks	$410
$Diffraction Gratings for 77250 and 77250B Monochromators$	7730277250 Monochromator Grating, Ruled, 75 l/mm, 8 um blaze, 4.5-20 um	UNIVERSAL	Contact Us	$410
$Diffraction Gratings for 77250 and 77250B Monochromators$	7730377250 Monochromator Grating, Ruled, 50 l/mm, 12 um blaze, 7-23 um	UNIVERSAL	6 Weeks	$410

Fixed Slits

Description	Compatibility	Avail.	Price
77219Fixed Slit, 50 µm Width, 6 mm Height	UNIVERSAL	4 Weeks	$340
77218Fixed Slit, 120 µm Width, 18 mm Height	UNIVERSAL	4 Weeks	$200
77217Fixed Slit, 280 µm Width, 18 mm Height	UNIVERSAL	In Stock	$205
77216Fixed Slit, 600 µm Width, 18 mm Height	UNIVERSAL	In Stock	$205
77215Fixed Slit, 760 µm Width, 18 mm Height	UNIVERSAL	Contact Us	$190
77214Fixed Slit, 1240 µm Width, 18 mm Height	UNIVERSAL	In Stock	$200
77213Fixed Slit, 1.56 mm Width, 18 mm Height	UNIVERSAL	Contact Us	$190
77212Fixed Slit, 3.16 mm Width, 18 mm Height	UNIVERSAL	3 Weeks	$200
77211Fixed Slit, 6.32 mm Width, 18 mm Height	UNIVERSAL	4 Weeks	$200
77221Fixed Slit, 50 µm Width, 3 mm Height	UNIVERSAL	Contact Us	$355
77728Fixed Slit, 100 μm Width, 3 mm Height	UNIVERSAL	5 Weeks	$200
77730Fixed Slit, 200 μm Width, 3 mm Height	UNIVERSAL	Contact Us	$200

Optional Accessories

Description	Compatibility	Avail.	Price
77387Mounting Kit, 77250 and 77250B Monochromators, Imperial	UNIVERSAL	In Stock	$340
OAP-ADAPTParabolic Mirror Adapter, 1.5 in. Series Flange	UNIVERSAL	Contact Us	$605
RF-ADAPTOptical Fiber Adapter, Monochromator, Rectangular Fiber Bundle	UNIVERSAL	5 Weeks	$455
71260Optical Filter Holder, Quick Change, 1.75 - 2 in., 1.6 in. Clear Aperture	UNIVERSAL	4 Weeks	$365
7124Filter Adapter, 1 inch Filter for 71260 Holder	UNIVERSAL	3 Weeks	$105
USFW-100Universal Filter Wheel, Flange Mount, Motorized	UNIVERSAL	In Stock	$1,790