The ModeScan Model 1780 is a laser beam profiling instrument that measures the M² Beam Propagation Ratio and all associated ISO 11146 parameters instantaneously in real time at video rates to over 20Hz. The measurement technique, patented by Photon Inc., uses 10 reflective surfaces to form simultaneous images of the propagating beam at 10 locations on a Model 2512 CCD array camera. With all ten measurement positions acquired at once, the instrument is suitable for measurement of both CW and pulsed lasers down to single-shot rates. Beam diameters are obtained with NIST-traceable accuracy to better than 2% using the BeamPro. This translates to M² measurements with accuracy to ~5%. The FireWire system operates under Photon’s BeamPro in Microsoft Windows. The compactness of the system and the IEEE 1394a FireWire interface offers enhanced ease-of-use and portability. The ability to operate in any orientation allows for easy placement on any optical bench and saves valuable bench space.

The CCD is sensitive from ~250nm to 1100nm wavelengths. The standard configuration is supplied with a glass OD 2.8 C-mount neutral density filter for wavelengths >360nm, and an OD 3.0 Fused Silica Inconel neutral density filter for wavelengths <360nm. Because of the limited usefulness of exposure control with pulsed lasers, the Photon Inc. Model ATP is recommended for use with pulsed lasers with repetition rate <~10kHz and wavelength >360nm. For pulsed lasers with wavelength <360nm, a variable UV filter or a combination of UV filters will generally be required.

ModeScan Model 1780 System Specifications

Optical/Sensor/Detector
Sensor	Si CCD 1/2" Format
Wavelength	~360nm – ~1100nm (Standard with OD 2.8 filter) ~250nm – ~1100nm with UV optics
Pixel Array	780 (H) × 580 (V)
Pixel Size	8.3μm × 8.3μm
Array Dimension	6.49mm × 4.83mm
Scanning Mode	Progressive
CCD Cover Glass	Removed
Beam Splitters	Fused Silica: <20/10 Scratch Dig, l/10 Flatness
Test Lenses UV: ~250 – 460nm Visible : 425 – 720nm VIS – NIR; 620 – 1080n	200mm fl Fused Silica/250 – 460nm AR coated standard 200mm fl BK7/425 – 720nm AR coated standard 200mm fl BK7/620 – 1080nm AR coated standard other fl's optional for all wavelengths
Fixed Attenuator: Visible – NIR UV	OD 2.8 Absorbing Glass >360nm OD 3.0 Fused Silica Inconel 250 – 450nm
Computer/Electrical
A / D Conversion	12 Bit
Maximum Frame Rate	35.8fps (full frame @ full resolution)
Exposure range	20μs–27.64ms (Software selectable via 1394 bus)
Gain	0–12dB (Software selectable via 1394 bus)
Trigger	Internal or External (Software selectable)
External Trigger Specifications	5V ±1V @ 10mA ±5mA (Positive transition)
Trigger Connector	10 pin RJ-45 Jack
Trigger Cable	10 pin RJ-45 to BNC 1.8m
Interface	IEEE 1394a (FireWire)
IEEE 1394 Cabl	1.8m
Supply Voltage	+8V – +36V DC (+12V DC nominal), <1% ripple (supplied via IEEE 1394 cable); requires external powered hub with laptop PCs
Supply Power	3.5W max @ 12V DC (typical)
Mechanical
Filter/Lens Mount	C-mount (1" – 32 tpi)
Mounting	Gimbal Mount on ½" post; 12mm Metric post optional
Dimensions in mm	62 H × 140 W × 210 L , + Gimbal Mount
Weight	~1.4kg
Environmental
Operating Temperature	O° – +50°C (+32° – 112F)
Humidity	20% – 80%, relative, non-condensing
Conformity	CE; FCC; RoHS and WEEE

	Item	Description	P/N

ModeScan 1780 M² System with Fire Wire BeamPro

	MS-1780	ModeScan Model 1780, dedicated M² measurement system, with 12-bit FireWire (IEEE 1394a) CCD detector for single-shot, pulsed and CW lasers. System includes: ModeScan with gimbaled mount for alignment; FireWire CCD camera; Photon FireWire BeamPro Acquisition and Analysis Software standalone GUI with M² Analysis; Active X automation interface; 200mm lens coated for Visible range (400– 700nm); OD 2.8 glass filter for operation >360nm; Dimensions: 62mm x 140mm x 210mm; For use from 250–1100nm wavelengths - UV and NIR operation will require additional specifically coated optics.	PH00096

	MS 1780 Lens Kits	All lens kits contain 200mm, 250mm, 400mm, 500mm, 750mm and 1m focal length coated lens with mounting hardware and MS-Tube Kit.

	MS-NIR Kit	Set of lenses coated for operation in NIR (700–1100nm)	PH00111

	MS-VIS Kit	Set of lenses coated for operation in VIS (400–700nm)	PH00194

	MS-UV Kit	Set of lenses coated for operation in UV (250–400nm)	PH00097

	MS-YAG Kit	Set of all the available lenses for all wavelengths (MS-NIR,VIS and UV Kits combined) and MS-Tube Kit	PH00118

	MS-TUBE Kit	Set of C-Mount tubes to mount lenses to the MS-1780. Includes 100mm, 50mm, 40mm, 25mm, 10mm and 50-90mm adjustable focusing tube	PH00127

	ModeScan 1780 Accessories

	UV Lens Kit	UV lenses are all fused silica plano-convex and coated for UV wavelengths 250-400nm	PH00097

	UV200	200mm focal length lens	PH00098

	UV250	250mm focal length lens	PH00099

	UV350	350mm focal length lens	PH00100

	UV500	500mm focal length lens	PH00101

	UV750	750mm focal length lens	PH00102

	UV1000	1000mm focal length lens	PH00103

	MS-VIS Lens Kit	Visible (VIS) lenses are all BK 7 plano-convex and coated for visible wavelengths 450–650nm	PH00104

	VIS200	200mm focal length lens	PH00105

	VIS250	250mm focal length lens	PH00106

	VIS400	400mm focal length lens	PH00107

	VIS500	500mm focal length lens	PH00108

	VIS750	750mm focal length lens	PH00109

	VIS1000	1000mm focal length lens	PH00110

	MS-NIR Lens Kit

	NIR200	200mm focal length lens	PH00112

	NIR250	250mm focal length lens	PH00113

	NIR400	400mm focal length lens	PH00114

	NIR500	500mm focal length lens	PH00115

	NIR750	750mm focal length lens	PH00116

	NIR1000	1000mm focal length lens	PH00117

	Extension and Focusing Tubes

	CM-EXT100	100mm long C-Mount extension tube for mounting lenses outside ModeScan 1780 Box	PH00119

	CM-EXT50	50mm long C-Mount extension tube for mounting lenses outside ModeScan 1780 Box	PH00120

	CM-EXT40	40mm long C-Mount extension tube for mounting lenses outside ModeScan 1780 Box	PH00121

	CM-EXT25	25mm long C-Mount extension tube for mounting lenses outside ModeScan 1780 Box	PH00122

	CM-EXT10	10mm long C-Mount extension tube for mounting lenses outside ModeScan 1780 Box	PH00123

	FOCTUBE20-30	C-Mount fine thread focus tube with 20–30mm adjustable length for focus of lenses mounted to extension tubes	PH00124

	FOCTUBE30-50	C-Mount fine thread focus tube with 30–50mm adjustable length for focus of lenses mounted to extension tubes	PH00125

	FOCTUBE50-90	C-Mount fine thread focus tube with 50–90mm adjustable length for focus of lenses mounted to extension tubes	PH00126

	MS-TUBE Kit	Tube Kit for MS-1780	PH00127

		Beam Profilers Catalog 107 pages (8.12 MB )
		ModeScan 1780 Manual 156 pages (3.54 MB )