CRH1 Compact Diode Laser Assemblies

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CVI Melles Griot Home Page > Products > Lasers > Diode Laser Assemblies > CRH1 Compact Diode Laser Assemblies

CRH1 - CRH1 Compact Diode Laser Assemblies

Related Products

•	>45 mW at 408nm

•	>37 mW at 442nm

•	>45 mW at 642nm

•	>75 mW at 658 nm

•	Analog and digital modulation

•	Power stability better than ±2%

•	<2% peak-to-peak optical noise

•	Circular and elliptical beam options

•	5-Vdc operation

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The new 26 CRH-series diode laser systems from CVI Melles Griot provide excellent output power and pointing stability from an ultracompact laser head. This is achieved by removing all of the heat-generating drive electronics from the laser head and placing them in our new universal controller. The laser head is hermetically sealed, which improves overall reliability in harsh environments. Three beam sizes are available to simplify optical system design.

A small footprint and versatile system integration make the 26 CRH series diode laser system ideal for inclusion in OEM systems for flow cytometry, confocal microscopy, and metrology.

Compliance label for CRH and RCS series Class IIIb laser products (output power <500 mW)

26 CRH-series laser head

26 CRH-series universal controller

Specifications
Options	Custom wavelengths Custom output power Custom beam diameter Focused beams Inverted modulation signal polarity
Beam Characteristics
Beam Centration	<0.5 mm
Beam Dimension (1/e²)	0.7
Beam Dimension (1/e²)	1.1
Beam Dimension (1/e²)	1.1×2.4
Beam Dimension (1/e²)	1.3×2.8
Beam Dimension (1/e²)	1.3×2.9
Bore-Sight Error	<2 mrad
Far Field Circularity	>95%
Far-Field Divergence (1/e²)	0.9
Far-Field Divergence (1/e²)	0.9×0.6
Far-Field Divergence (1/e²)	1.0×0.6
Far-Field Divergence (1/e²)	1.4
Output Power	100
Output Power	15
Output Power	37
Output Power	40
Output Power	45
Output Power	50
Output Wavelength	408
Output Wavelength	442
Output Wavelength	488
Output Wavelength	642
Polarization	Linear (vertical ± 2 degrees), >100:1 extinction ratio
Electrical Characteristics
Computer Interface	RS-232
Input Frequency	50–60 Hz
Input Power	<30 W
Input Voltage	100–240 Vac ± 10%
Environmental Requirements
Nonoperating Temperature	-20°C to +60°C
Operating Humidity	<95%, noncondensing
Operating Temperature	10°C to 40°C
Shock	>25 g (11 msec nonoperating)
Vibration Nonoperating	<3 g (sinusoidal) 5 Hz to 500 Hz
Vibration Operating	<0.3 g (sinusoidal) 5 Hz to 500 Hz
Modulation Characteristics
ACC Mode Analog² Bandwidth (-3 dB)	dc to >1 MHz
ACC Mode Analog² Linearity Accuracy	>95%
ACC Mode Digital¹ Rise/Fall Time	<500 nsec
APC Mode Analog² Linearity Accuracy	>95%
APC Mode Analog² Bandwidth (-3 dB)	dc to >25 kHz
APC Mode Digital¹ Rise/Fall Time	<20 μsec
Operating Characteristics
Cooling	Thermoelectric
Maximum Heat Dissipation Controller	<13 W
Maximum Heat Dissipation Laser Head	<16 W
Operating Mode	Automatic Current Control (ACC) or Automatic Power Control (APC)
Safety and Regulatory Compliance
CDRH Class	IIIb
IEC Class	3B
Regulatory Compliance	CE Compliant
Stability Characteristics
Amplitude Noise Peak-to-Peak	<2% (10 Hz to 2 MHz)
Amplitude Noise rms	<0.5% (10 Hz to 2 MHz)
Pointing Stability	<10 μrad/°C
Power Stability	<2% peak-to-peak over 8 hours (ambient ±2°C)

Frequently Asked Questions (FAQs)

Question: I have an older CVI Melles Griot Laser, part number 05 LHP 151 that I need to replace, but I can't find the same part number in the new catalog. Is it still a current product?

Yes it is. In our previous catalogs, we sold the laser heads and the power supplies separately, whereas in our new catalog we have grouped them together to be sold as systems. We found that most people ordered both the laser head and its appropriate power supply on the same orders, so we decided to sell them as a system to make it easier on the consumer.

The 05LHP151 is the part number for just the laser head while the new system part number 25 LHP 151-249 designates the same laser head with its corresponding US power supply.

We understand that our customers may only need to buy just the laser head or just the power supply, so we still sell them individually.

Commonly, we can still supply a laser head or power supply, but just haven't listed it in the catalog or on the website. This particularly applies to our older components. Most of the time these are still available and can be purchased by calling us directly.

Simply contact the CVI Melles Griot's Applications Engineering department to find the appropriate parts: Customer Support.

Question: What color is the 85 BCA Series

Question: Does it come in different colors

Question: What is the Doppler broadened gain width of a Helium Neon laser?

Question: Can a Helium Neon laser be re-gassed?

Question: What agency approvals are available for the CVI Melles Griot Helium Neon lasers?

Question: Which power supply can I use to operate my Helium Neon laser?

Question: What is the coherence length of a Helium Neon laser?

Document	Description
Laser Capabilities	Capability Brochure Section

Product/PN	AutoCad (pdf)	AutoCad (dxf)	SolidWorks	Step	Manual	Spec Sheet	Compliance Documents	Catalog Page	Press Release	ROHS
CRH1

Click Document title to view Document.

Document	Description
Basic Laser Principles	Basic Laser Principles
Fiber-Optic Laser Beam Delivery Systems	Laser-to-fiber couplers use a lens to focus the light from the laser to a spot matching the size of the fiber core. The coupler is attached directly onto the laser and uses a patented tilt adjustment technique
Frequency and Amplitude Fluctuations	Frequency and Amplitude Fluctuations
High Energy Laser Damage Threshold	Measurement definitions and results
Introduction to Air-Cooled Ion Lasers	CVI Melles Griot is a major manufacturer of air-cooled ion lasers for OEM applications in medicine, reprographics, and analytical instrumentation. Consequently, we offer a wide variety of standard and custom options. For complete, turnkey systems that meet all of the environmental and emission requirements for stand-alone systems, click Buy Online in the table below. To review our complete product offering, including customization options, click on the Build to Order icon.
Introduction to Diode Laser Assemblies	Diode Laser Assemblies are readily available at wavelengths varying from 408 nm to 1.6 µm and above, and at output power ranging from a few milliwatts to several watts. Because of their small size and exceptional efficiency, diode lasers have replaced the HeNe laser in many OEM applications, particularly in those where beam quality and wavelength stability, and unit-to-unit repeatability are not critical. Melles Griot does not manufacture laser diodes! It does manufacture diode laser assemblies that include beam-conditioning optics, automatic power control (APC), temperature control, environmentally sound packaging, and any other features required to meet your exact design goals.
Introduction to Helium Cadmium Lasers	The helium cadmium (HeCd) laser is a member of the same laser family as the HeNe, and is the only relatively economical, continuous-wave (cw) source of violet (442-nm) and ultraviolet (325-nm) output. Because of its excellent match to photo polymer and film sensitivity wavelength ranges and its good beam quality, it is used extensively for three-dimensional stereolithography applications, as well as for creating embossed holograms
Introduction to Helium Neon Lasers	The helium neon laser was the first laser to be used in volume applications. Currently, there are millions of HeNe lasers in the field, and only the semiconductor diode laser is produced in greater volume. The key to the HeNe's success has been its low cost, small size, long operating life (as much as 50,000 operating hours), and unsurpassed beam quality. HeNe lasers produce milliwatts of output power and are available in a variety of wavelengths ranging from 543 nm (green) to 1.523 μm (infrared). The most common wavelength is the familiar 633 nm (red). These lasers are small, convection cooled, and can be operated from ordinary household power or even from batteries.
Introduction to Solid-State Lasers	Diode-pumped solid-state (DPSS) microchip lasers are an exciting new tool for OEM applications that combines the beam quality of a gas laser and the small size and efficiency of a diode laser with single-line output in the blue (473 and 488 nm), green (532 nm), or yellow (561 nm).
Laser Accessories Overview	Beam expanders, laser collimator, laser to fiber couplers, fiber optic beam delivery systems, laser beam dumps, adapter holders, focusing optics, precision mounted anamorphic prisms, F-Theta lenses
Laser Applications	Laser Applications
Laser Guide	Laser Guide
Laser Selection Guide	CVI Melles Griot manufactures a wide variety of lasers with over 32 discrete wavelengths ranging from the ultraviolet to the near infrared. We offer three basic types of lasers: gas lasers (HeNe, HeCd, Ion), diode-pumped solid-state (DPSS) lasers, and semiconductor diode lasers assemblies.
Laser Types	Laser Types
Propagation Characteristics of Laser Beams	Propagation Characteristics of Laser Beams
Single Axial Longitudianl Mode Operation	Single Axial Longitudianl Mode Operation
Transverse Modes and Mode Controls	Transverse Modes and Mode Controls
Tunable Operation	Tunable Operation

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Part Number	Safety Classification Safety Classification	Output Wavelength (nm)	Output Power (mW)	Beam Dimensions (1/e²) (mm)	Far-Field Divergence (1/e²) (mrad)	Price	Add to Cart	In Stock
26CRH002-001	CDRH IIIb, IEC 3B, CE	408	45	0.7	1.4	Request	Email	Email
26CRH002-002	CDRH IIIb, IEC 3B, CE	408	45	0.7	1.4	Request	Email	Email
26CRH002-003	CDRH IIIb, IEC 3B, CE	408	45	0.7	1.4	Request	Email	Email
26CRH002-004	CDRH IIIb, IEC 3B, CE	408	45	0.7	1.4	Request	Email	Email
26CRH102-001	CDRH IIIb, IEC 3B, CE	408	45	1.1	0.9	Request	Email	Email
26CRH102-002	CDRH IIIb, IEC 3B, CE	408	45	1.1	0.9	Request	Email	Email
26CRH102-003	CDRH IIIb, IEC 3B, CE	408	45	1.1	0.9	Request	Email	Email
26CRH102-004	CDRH IIIb, IEC 3B, CE	408	45	1.1	0.9	Request	Email	Email
26CRH202-001	CDRH IIIb, IEC 3B, CE	408	50	1.1×2.4	1.0×0.6	Request	Email	Email
26CRH202-002	CDRH IIIb, IEC 3B, CE	408	50	1.1×2.4	1.0×0.6	Request	Email	Email
26CRH202-003	CDRH IIIb, IEC 3B, CE	408	50	1.1×2.4	1.0×0.6	Request	Email	Email
26CRH202-004	CDRH IIIb, IEC 3B, CE	408	50	1.1×2.4	1.0×0.6	Request	Email	Email
26CRH009-001	CDRH IIIb, IEC 3B, CE	408	100	0.7	1.4	Request	Email	Email
26CRH009-002	CDRH IIIb, IEC 3B, CE	408	100	0.7	1.4	Request	Email	Email
26CRH009-003	CDRH IIIb, IEC 3B, CE	408	100	0.7	1.4	Request	Email	Email
26CRH009-004	CDRH IIIb, IEC 3B, CE	408	100	0.7	1.4	Request	Email	Email
26CRH109-001	CDRH IIIb, IEC 3B, CE	408	100	1.1	0.9	Request	Email	Email
26CRH109-002	CDRH IIIb, IEC 3B, CE	408	100	1.1	0.9	Request	Email	Email
26CRH109-003	CDRH IIIb, IEC 3B, CE	408	100	1.1	0.9	Request	Email	Email
26CRH109-004	CDRH IIIb, IEC 3B, CE	408	100	1.1	0.9	Request	Email	Email
26CRH209-001	CDRH IIIb, IEC 3B, CE	408	100	1.1×2.4	1.0×0.6	Request	Email	Email
26CRH209-002	CDRH IIIb, IEC 3B, CE	408	100	1.1×2.4	1.0×0.6	Request	Email	Email
26CRH209-003	CDRH IIIb, IEC 3B, CE	408	100	1.1×2.4	1.0×0.6	Request	Email	Email
26CRH209-004	CDRH IIIb, IEC 3B, CE	408	100	1.1×2.4	1.0×0.6	Request	Email	Email
26CRH003-001	CDRH IIIb, IEC 3B, CE	442	37	0.7	1.4	Request	Email	Email
26CRH003-002	CDRH IIIb, IEC 3B, CE	442	37	0.7	1.4	Request	Email	Email
26CRH003-003	CDRH IIIb, IEC 3B, CE	442	37	0.7	1.4	Request	Email	Email
26CRH003-004	CDRH IIIb, IEC 3B, CE	442	37	0.7	1.4	Request	Email	Email
26CRH103-001	CDRH IIIb, IEC 3B, CE	442	37	1.1	0.9	Request	Email	Email
26CRH103-002	CDRH IIIb, IEC 3B, CE	442	37	1.1	0.9	Request	Email	Email
26CRH103-003	CDRH IIIb, IEC 3B, CE	442	37	1.1	0.9	Request	Email	Email
26CRH103-004	CDRH IIIb, IEC 3B, CE	442	37	1.1	0.9	Request	Email	Email
26CRH203-001	CDRH IIIb, IEC 3B, CE	442	40	1.3×2.8	0.9×0.6	Request	Email	Email
26CRH203-002	CDRH IIIb, IEC 3B, CE	442	40	1.3×2.8	0.9×0.6	Request	Email	Email
26CRH203-003	CDRH IIIb, IEC 3B, CE	442	40	1.3×2.8	0.9×0.6	Request	Email	Email
26CRH203-004	CDRH IIIb, IEC 3B, CE	442	40	1.3×2.8	0.9×0.6	Request	Email	Email
26CRH008-001	CDRH IIIb, IEC 3B, CE	488	15	0.8	1.2	Request	Email	Email
26CRH008-002	CDRH IIIb, IEC 3B, CE	488	15	0.8	1.2	Request	Email	Email
26CRH008-003	CDRH IIIb, IEC 3B, CE	488	15	0.8	1.2	Request	Email	Email
26CRH008-004	CDRH IIIb, IEC 3B, CE	488	15	0.8	1.2	Request	Email	Email
26CRH108-001	CDRH IIIb, IEC 3B, CE	488	15	1.1	0.9	Request	Email	Email
26CRH108-002	CDRH IIIb, IEC 3B, CE	488	15	1.1	0.9	Request	Email	Email
26CRH108-003	CDRH IIIb, IEC 3B, CE	488	15	1.1	0.9	Request	Email	Email
26CRH108-004	CDRH IIIb, IEC 3B, CE	488	15	1.1	0.9	Request	Email	Email
26CRH208-001	CDRH IIIb, IEC 3B, CE	488	15	1.2×2.9	0.9×0.6	Request	Email	Email
26CRH208-002	CDRH IIIb, IEC 3B, CE	488	15	1.2×2.9	0.9×0.6	Request	Email	Email
26CRH208-003	CDRH IIIb, IEC 3B, CE	488	15	1.2×2.9	0.9×0.6	Request	Email	Email
26CRH208-004	CDRH IIIb, IEC 3B, CE	488	15	1.2×2.9	0.9×0.6	Request	Email	Email
26CRH004-001	CDRH IIIb, IEC 3B, CE	642	45	0.7	1.4	Request	Email	Email
26CRH004-002	CDRH IIIb, IEC 3B, CE	642	45	0.7	1.4	Request	Email	Email
26CRH004-003	CDRH IIIb, IEC 3B, CE	642	45	0.7	1.4	Request	Email	Email
26CRH004-004	CDRH IIIb, IEC 3B, CE	642	45	0.7	1.4	Request	Email	Email
26CRH104-001	CDRH IIIb, IEC 3B, CE	642	45	1.1	0.9	Request	Email	Email
26CRH104-002	CDRH IIIb, IEC 3B, CE	642	45	1.1	0.9	Request	Email	Email
26CRH104-003	CDRH IIIb, IEC 3B, CE	642	45	1.1	0.9	Request	Email	Email
26CRH104-004	CDRH IIIb, IEC 3B, CE	642	45	1.1	0.9	Request	Email	Email
26CRH204-001	CDRH IIIb, IEC 3B, CE	642	50	1.3×2.9	0.9×0.6	Request	Email	Email
26CRH204-002	CDRH IIIb, IEC 3B, CE	642	50	1.3×2.9	0.9×0.6	Request	Email	Email
26CRH204-003	CDRH IIIb, IEC 3B, CE	642	50	1.3×2.9	0.9×0.6	Request	Email	Email
26CRH204-004	CDRH IIIb, IEC 3B, CE	642	50	1.3×2.9	0.9×0.6	Request	Email	Email
26CRH007-001	CDRH IIIb, IEC 3B, CE	642	100	0.7	1.4	Request	Email	Email
26CRH007-002	CDRH IIIb, IEC 3B, CE	642	100	0.7	1.4	Request	Email	Email
26CRH007-003	CDRH IIIb, IEC 3B, CE	642	100	0.7	1.4	Request	Email	Email
26CRH007-004	CDRH IIIb, IEC 3B, CE	642	100	0.7	1.4	Request	Email	Email
26CRH107-001	CDRH IIIb, IEC 3B, CE	642	100	1.0	1.0	Request	Email	Email
26CRH107-002	CDRH IIIb, IEC 3B, CE	642	100	1.0	1.0	Request	Email	Email
26CRH107-003	CDRH IIIb, IEC 3B, CE	642	100	1.0	1.0	Request	Email	Email
26CRH107-004	CDRH IIIb, IEC 3B, CE	642	100	1.0	1.0	Request	Email	Email
26CRH207-001	CDRH IIIb, IEC 3B, CE	642	120	1.3×2.3	0.9×0.6	Request	Email	Email
26CRH207-002	CDRH IIIb, IEC 3B, CE	642	120	1.3×2.3	0.9×0.6	Request	Email	Email
26CRH207-003	CDRH IIIb, IEC 3B, CE	642	120	1.3×2.3	0.9×0.6	Request	Email	Email
26CRH207-004	CDRH IIIb, IEC 3B, CE	642	120	1.3×2.3	0.9×0.6	Request	Email	Email
26CRH005-001	CDRH IIIb, IEC 3B, CE	658	75	0.7	1.4	Request	Email	Email
26CRH005-002	CDRH IIIb, IEC 3B, CE	658	75	0.7	1.4	Request	Email	Email
26CRH005-003	CDRH IIIb, IEC 3B, CE	658	75	0.7	1.4	Request	Email	Email
26CRH005-004	CDRH IIIb, IEC 3B, CE	658	75	0.7	1.4	Request	Email	Email
26CRH105-001	CDRH IIIb, IEC 3B, CE	658	75	1.0	1.0	Request	Email	Email
26CRH105-002	CDRH IIIb, IEC 3B, CE	658	75	1.0	1.0	Request	Email	Email
26CRH105-003	CDRH IIIb, IEC 3B, CE	658	75	1.0	1.0	Request	Email	Email
26CRH105-004	CDRH IIIb, IEC 3B, CE	658	75	1.0	1.0	Request	Email	Email
26CRH205-001	CDRH IIIb, IEC 3B, CE	658	75	1.3×2.3	0.9×0.6	Request	Email	Email
26CRH205-002	CDRH IIIb, IEC 3B, CE	658	75	1.3×2.3	0.9×0.6	Request	Email	Email
26CRH205-003	CDRH IIIb, IEC 3B, CE	658	75	1.3×2.3	0.9×0.6	Request	Email	Email
26CRH205-004	CDRH IIIb, IEC 3B, CE	658	75	1.3×2.3	0.9×0.6	Request	Email	Email

¹ Two user-selectable current levels (ACC mode) or power levels (APC mode) set via software or external signal input.
² Linearity specification applies from 10% to 90% of full output power. Level set via a 0 to 4 Vdc signal applied to SMB connector on the controller (>4 Vdc, output off).
* Add the appropriate suffix to the product number to indicate input voltage: -001 for 100 Vac, -002 for 115 Vac, -003 for 230 Vac, -004 for 240 Vac


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