MELLES GROIT 2074-S-A01 Griot Omnichrome Helium Cadmium Hecd 2074-M-A02 Laser

( Brand: Melles Groit ), ( Manufacturer Part Number: 2074-S-A01 ), ( Part Type: Laser ), ( Unit Type: Unit ), ( Output Power: 7/22 Mw ), ( Custom Bundle: No ), ( Country Of Origin: United States ), ( Intended Use/discipline: Biological Laboratory, Dental Laboratory, Dentistry )

Review MELLES GROIT Griot Omnichrome Helium cadmium Hecd Laser

The **Melles Griot 2074-S-A01 (Griot 2074-M-A02) Omnichrome Helium-Cadmium (HeCd) Laser** represents a cutting-edge, high-performance laser system designed for precision applications in scientific research, industrial metrology, and advanced optical experimentation. This compact yet robust laser module delivers a reliable, continuous-wave (CW) output at a wavelength of **441.6 nanometers**, making it an ideal choice for applications requiring deep ultraviolet (DUV) light with exceptional coherence and stability. Engineered with meticulous attention to detail, the HeCd laser combines a helium-cadmium gas discharge tube with a sophisticated optical cavity, ensuring a narrow linewidth and minimal beam divergence, which are critical for high-resolution imaging, holography, fluorescence microscopy, and laser-based material processing. The laser s **single-mode operation** and **low noise output** make it particularly suited for sensitive measurements in spectroscopy, interferometry, and quantum optics, where consistency and purity of the laser beam are paramount. Its **automatic power control (APC)** feature further enhances stability by maintaining a steady output power within a tight tolerance, even under varying environmental conditions or thermal fluctuations. The compact, modular design of the 2074-S-A01 and 2074-M-A02 variants allows for seamless integration into existing experimental setups, with options for both **free-space and fiber-coupled** configurations, depending on the application s specific requirements. Additionally, the laser s **long operational lifetime**, achieved through advanced gas purification and cooling systems, ensures prolonged performance without frequent maintenance, making it a cost-effective solution for demanding laboratory environments. Whether used for ultrafast pulse generation, laser-induced fluorescence studies, or precision metrology, this HeCd laser exemplifies the precision and reliability expected from Melles Griot s legacy of optical innovation, delivering uncompromising performance for researchers and engineers pushing the boundaries of optical science.

### **Pros and Cons of buying a Melles Griot 2074-S-A01 (Griot 2074-M-A02) Omnichrome Helium-Cadmium (HeCd) Laser**

#### **Pros**

1. **High Power and Stability**

The HeCd laser (specifically the 325 nm or 442 nm models) is known for its high output power (typically 10 50 mW) and excellent beam coherence, making it suitable for precision applications such as microscopy, spectroscopy, and holography. The Melles Griot 2074 series is engineered for stability, with low noise and minimal drift, which is critical for long-term experiments.

2. **Wavelength Flexibility**

The HeCd laser offers two common wavelengths (325 nm UV and 442 nm blue), which are useful for fluorescence excitation, Raman spectroscopy, and other optical experiments. The 325 nm line, in particular, is ideal for UV applications where other lasers may not be as efficient.

3. **Compact and Reliable Design**

Melles Griot is a reputable manufacturer known for durable, high-quality laser systems. The 2074 series is designed for laboratory use, with robust mounting options and minimal maintenance requirements. The sealed construction reduces the risk of contamination from air or dust.

4. **Compatibility with Optical Systems**

The laser includes a built-in beam expander or collimator, making it easier to integrate into optical setups. The output beam quality is typically excellent (near-diffraction-limited), which is essential for applications requiring tight focusing.

5. **Long Lifespan (Compared to Other Gas Lasers)**

While HeCd lasers have a finite lifespan (typically 2,000 5,000 hours depending on usage), they generally outlast many diode lasers in high-power applications. Proper maintenance (e.g., regular alignment checks) can extend their operational life.

6. **Precision for Scientific Research**

The laser s narrow linewidth and high spatial coherence make it ideal for interferometry, laser scanning microscopy, and other high-precision experiments where beam quality is paramount.

---

#### **Cons**

1. **High Cost**

The Melles Griot 2074-S-A01 (or equivalent Omnichrome/Griot 2074-M-A02) is an expensive investment, often costing several thousand dollars. This makes it less accessible for small labs, students, or budget-conscious researchers.

2. **Maintenance and Alignment Requirements**

Gas lasers like HeCd require periodic alignment and, in some cases, gas refills (though newer models may have longer-lasting gas fills). Misalignment can degrade performance, and improper handling may reduce lifespan.

3. **Safety Hazards**

High-power UV (325 nm) and blue (442 nm) lasers pose significant eye and skin hazards. Proper safety measures (e.g., laser safety goggles, enclosure systems) are mandatory, adding to operational costs and complexity.

4. **Limited Availability of Replacement Parts**

As HeCd lasers age, finding replacement components (e.g., mirrors, gas tubes) can be difficult, especially for older models. This may lead to extended downtime if repairs are needed.

5. **Energy Consumption**

Gas lasers like HeCd require significant electrical power and cooling, which can increase operational costs compared to solid-state or diode-pumped lasers.

6. **Environmental Sensitivity**

The laser s performance can be affected by temperature fluctuations, vibrations, and air turbulence. A stable laboratory environment is often required for optimal operation.

7. **Depreciation Over Time**

While HeCd lasers are durable, newer diode-pumped solid-state (DPSS) lasers or fiber lasers may offer comparable performance at a lower cost in the long run. This can lead to obsolescence as technology advances.

---

### **Conclusion**

The Melles Griot 2074-S-A01 (or Omnichrome Griot 2074-M-A02) HeCd laser is a high-performance, reliable workhorse for advanced optical applications where beam quality, power, and stability are critical. Its strengths lie in its precision, wavelength options, and durability, making it a preferred choice for research labs, microscopy, and spectroscopy. However, its high cost, maintenance needs, and safety requirements make it less suitable for casual users, students, or cost-sensitive applications.

For users who require a robust, long-lasting laser with excellent beam properties and do not have budget constraints, this laser remains a strong option. Alternatively, if cost efficiency and ease of use are priorities, newer diode lasers (e.g., 405 nm or 445 nm DPSS lasers) may offer comparable performance at a lower total cost of ownership.

---

### **Recommendation**

- You are working in a well-funded research lab requiring high-power, stable UV/blue laser light.

- Your application demands precision (e.g., laser scanning microscopy, holography, or high-resolution spectroscopy).

- You have the infrastructure (safety measures, cooling, alignment tools) to maintain the laser properly.

- You prioritize longevity and beam quality over cost efficiency.

- You are on a tight budget and can achieve similar results with a lower-cost laser.

- Your application does not require the full power or coherence of a HeCd laser.

- You need a more user-friendly, maintenance-free option (e.g., for educational or industrial settings).

For most academic or industrial labs, a well-maintained HeCd laser remains a valuable tool, but careful consideration of long-term costs and operational demands is essential. Always evaluate whether newer laser technologies (e.g., fiber lasers or diode-pumped systems) could meet your needs more efficiently.

Details:

These systems are typically used in high-precision scientific applications like flow symmetry, lithography, and fluorescence microscopy. Melles Griot 2074-M-A02 Omnichrome Helium-Cadmium HeCd Laser, Manufactured: Feb 2000 Serial Number: K1848, The Omnichrome Series 74 is a laser system. Current Brand: Melles Griot and Omnichrome brands are now part of IDEX Health Science. Key Specifications Based on the Series 74 configuration: Laser Type: Helium-Cadmium HeCd gas laser.

Wave length s: Typically emits at 325 NM UV or 442 Blue, though specific output depends on the internal mirror configuration. Physical Dimensions: The laser tube itself is approximately 30 inches long with a 1.5-inch diameter.

part #: 2074sa01 prices

• $538.35-$950.00

specifications industrlasemr:

• brand: Melles Groit
• mpn: 2074-s-a01
• part type: Laser
• unit type: Unit
• output power: 7/22 Mw
• custom bundle: No
• country of origin: United States
• intended use/discipline: Biological Laboratory, Dental Laboratory, Dentistry

payments industrlasemr:

• wallet: Google-pay
• other
• credit card: Diners-club

shipping industrlasemr:

• cost: $200.00
• class: Freight
• type: Fixed
• service: Flat Rate Freight

seller industrlasemr:

• rating: 98.9%
• # reviews: 1048
• city: Sparta, Tennessee

returns industrlasemr:

• policy: Returns Accepted
• paid by: Buyer
• method: Money back
• time: 30 Days

offer industrlasemr:

• quantity: 1
• options: Ship-to-home
• availability: In Stock
• best offers: True
• sold: 0
• started: April 9, 2026

general industrlasemr:

• condition: Used
• Medical/Lab Equipment Attachments Accessories > Lamps, Bulbs Laser Components > Laser Modules Heads

Melles Groit 2074-S-A01 Is Similar To:

• 007-075 Melles Griot R147359 Lot (29.4% similar) Comes as shown. No software, power cords, or other accessories are included unless stated above. This lot 6 Melles griot laser optic on two sides 02WBK appears to be in good cosmetic condition with normal signs of wear or previous use. All offered products are sold as advertised, is and without ...(February 21st, 2018)
• 01-cmp-003 Melles Griot Optical Fl (32.4% similar) If you experience a problem, please first. Melles griot optical 01-CMP-003 fl 10MM lens optics - new condition: very good used condition. Item gently used and well cared for with only mild signs of use handling...(January 20th, 2018)
• 01-cmp-123 Melles Griot Optimized Condenser Lens Fl Sfs (34.8% similar) If you experience a problem, please first. Melles griot 01-CMP-123 optimized condenser lens fl 75MM SF C2069 condition: very good used condition. Item briefly and gently used...(April 16th, 2018)
• 01-lqd011 Melles Griot Bicx Lens Fused Silica Dia Fl (29.5% similar) Marked very well including part...(February 28th, 2018)
• 01la0114 Melles Groit Achromat 31.5mm (35.1% similar) If the item is brand new, it would be clearly indicated by keyword new in. The detailed photos as provided serves a good guide for one to evaluate condition of actual item. In the case where an item is stated to be good condition, we refer it as being condition relation its age, and would like ...(January 18th, 2018)
• 01lag000 Melles Griot 12mm (31.1% similar) System was de-installed in working operational condition. Defective items, missing or items not described accurately. Handling charges may apply. Melles griot 12MM 01LAG000 selling as is, where is...(January 5th, 2018)
• 01lag001 Melles Griot Aspheric 15mm (28.6% similar) Optical precision esoteric lens made by Melles griot. All my lenses are new, however some have been unwrapped to photograph. 01LAG00115MM DOA x 12MM EFL achromatic lens. Beautiful coated optic quality lens...(August 14th, 2017)
• 01lag119 Melles Griot Aspheric 35mm (28.6% similar) 01LAG11935MM DOA x 35MM EFL achromatic lens. All my lenses are new, however some have been unwrapped to photograph. Optical precision-optimized esoteric lens made by Melles griot. Beautiful optic quality lens...(August 22nd, 2017)
• 01lam138 Melles Griot Precision Meniscus New (29.8% similar) This is a new Melles griot precision meniscus f items are usually shipped USPS or FedEx ground...(March 28th, 2018)
• 01lao014 Melles Griot Achromat Dia Fl (36.8% similar) 0MM DOA x 21. This is a new: Melles griot 01LAO014 achromatic 14. Items are usually shipped priority mail or ups...(July 8th, 2018)
• 01lao124 Melles Griot Lot Of New Mm Fl Achromatic Doublet Lens (38.8% similar) New from old stock a canceled program called Avis. Up for offer is a pair of achromatic doublet lenses by Melles griot. But wait theres more free surprise included if winning bid is placed before last hour of offer. The focal length is 100MM. It is MGF2 ar coated on both sides. Save even more and ...(May 1st, 2018)