MELLES GRIOT 250M-50 Coherent Compass Laser Head 215M-50

( Brand: Melles Griot ), ( Manufacturer Part Number: 250M-50 ), ( Model: COMPASS 250M-50 ), ( Part Type: Laser Head )

Review MELLES GRIOT Coherent Compass Laser Head

The **Melles Griot 250M-50 Coherent Compass 215M-50 Laser Head** represents a precision-engineered, high-performance laser module designed for demanding applications in optical communication, metrology, spectroscopy, and industrial laser systems. This compact yet robust laser head is built upon Coherent s renowned 215M series, a line of diode-pumped solid-state (DPSS) lasers known for their exceptional reliability, stability, and spectral purity. Operating at a wavelength of **532 nm (green)**, this laser delivers a **coherent, single-mode output** with a maximum power output of **up to 50 milliwatts**, making it ideal for applications requiring high brightness and directional precision. The **250M-50** designation signifies a model optimized for continuous-wave (CW) operation, ensuring consistent performance over extended periods without thermal drift or power fluctuations. Its **TEM transverse mode** output guarantees a diffraction-limited beam with minimal divergence, enhancing focusing capabilities and reducing spot size for critical applications such as interferometry, holography, or material processing. The laser head features a **hermetically sealed construction**, protecting the internal optics from environmental contaminants and ensuring long-term durability in harsh or controlled laboratory settings. Additionally, its **integrated temperature control system** maintains precise thermal stability, critical for maintaining wavelength consistency and minimizing beam pointing fluctuations. The compact and modular design allows for easy integration into existing optical setups, with standard **FC/PC or SMA connectors** facilitating seamless coupling with fiber optics, beam expanders, or scanning systems. Whether used in **LIDAR systems, laser scanning microscopy, or precision alignment tools**, this laser head combines the robustness of industrial-grade engineering with the precision of coherent light, delivering a versatile and dependable solution for researchers and engineers demanding the highest standards of optical performance.

The **Melles Griot 250mW-50 Coherent Compass 215mW Laser Head** is a high-quality, industrial-grade laser system designed for precision applications such as alignment, metrology, and optical testing. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

---

### **Pros**

1. **High Power and Stability**

The 250mW (continuous wave) and 215mW (Coherent Compass head) specifications indicate a robust laser capable of consistent performance for demanding applications. The stability of the beam ensures reliable measurements and alignment work.

2. **Coherent Compass Technology**

The Coherent Compass is a proprietary self-aligning laser head that simplifies setup and reduces human error. It automatically adjusts to maintain a straight beam path, which is particularly useful in dynamic or less controlled environments.

3. **Precision and Accuracy**

Designed for metrology and optical applications, this laser offers high precision, making it suitable for tasks requiring sub-millimeter accuracy. The compact design of the Coherent Compass head minimizes aberrations and ensures a clean, collimated beam.

4. **Durability and Build Quality**

Melles Griot is a reputable brand known for manufacturing high-quality, rugged optical equipment. This laser is built to withstand frequent use in industrial or laboratory settings, with robust housing and components.

5. **Compatibility with Melles Griot Ecosystem**

If you already use other Melles Griot products (e.g., mounts, beam splitters, or detectors), this laser integrates seamlessly with their modular optical systems. This can simplify future expansions or upgrades to your setup.

6. **Wavelength Flexibility**

The 250mW model is likely available in multiple wavelengths (e.g., 633nm, 532nm, or 405nm), depending on the specific model. This flexibility allows for applications requiring different absorption or reflection properties (e.g., biological samples, semiconductor inspection, or alignment in various materials).

7. **Low Maintenance Requirements**

As a solid-state laser, it does not require frequent bulb replacements or complex cooling systems (though some models may include optional cooling for extended use). This reduces downtime and operational costs.

8. **Safety Features**

Melles Griot lasers are designed with safety in mind, often including features like beam shutters, interlocks, or compliance with international safety standards (e.g., IEC 60825-1). The Coherent Compass head may also include protective housing to minimize accidental exposure.

9. **Warranty and Support**

Melles Griot offers comprehensive warranties and technical support, which can be invaluable for troubleshooting or repairs. Their customer service is often praised for responsiveness, especially for high-end optical equipment.

10. **Versatility in Applications**

- Optical testing (e.g., interferometry, wavefront sensing).

- Machine tool alignment in manufacturing.

- Educational demonstrations in physics or engineering labs.

- Custom optical experiments requiring a stable, high-power source.

---

### **Cons**

1. **High Cost**

The upfront cost of this laser is significantly higher than consumer-grade or lower-power alternatives. For hobbyists or small-scale applications, the expense may not be justified. Prices can range from **$2,000 to $5,000 **, depending on the exact model and accessories.

2. **Complexity for Beginners**

While the Coherent Compass head simplifies alignment, the overall system may still require familiarity with optical principles or technical assistance for proper setup. Users without experience in laser optics might struggle with calibration or troubleshooting.

3. **Power Consumption**

A 250mW laser, especially if continuously powered, will consume more electricity than lower-power alternatives. This may not be a significant issue for most users but could add to operational costs in large-scale or long-duration applications.

4. **Size and Portability**

The laser and its associated components (e.g., power supply, mounts) are not compact. While the Coherent Compass head is designed to be portable, the entire system may be cumbersome for fieldwork or frequent relocations. Some models may require additional mounting hardware.

5. **Limited Customization**

Unlike some modular laser systems, this specific model may not offer extensive customization options for beam shaping, modulation, or wavelength tuning. If you need specialized features (e.g., pulsed operation, variable power), you may need to pair it with additional accessories.

6. **Potential for Overkill**

For applications requiring lower power (e.g., simple alignment in a workshop or basic educational demonstrations), a 250mW laser may be unnecessary. Lower-power lasers (e.g., 5mW 50mW) from brands like Thorlabs or Ophir are often sufficient and far more affordable.

7. **Depreciation**

High-end optical equipment can depreciate quickly, especially if newer or more efficient models become available. While this laser is durable, its long-term value may diminish if you upgrade your equipment in a few years.

8. **Accessory Dependencies**

To fully utilize the laser, you may need to invest in additional accessories (e.g., beam expanders, detectors, or mounts), which can further increase costs. These accessories may not always be compatible with other brands, locking you into the Melles Griot ecosystem.

9. **Learning Curve for Advanced Features**

Features like the Coherent Compass s self-aligning capability are convenient but may not be intuitive for users unfamiliar with optical systems. Mastering the full potential of the laser could require time and training.

10. **Regulatory and Safety Compliance**

Higher-power lasers (especially Class 3B or 4) require strict adherence to safety regulations. Users must ensure proper training, signage, and protective measures are in place, which can add administrative overhead.

---

### **Conclusion**

The **Melles Griot 250mW-50 Coherent Compass 215mW Laser Head** is an excellent choice for professionals, researchers, or industrial users who require a **highly stable, precise, and durable** laser for alignment, metrology, or optical testing. Its self-aligning technology, compatibility with Melles Griot s ecosystem, and reputation for quality make it a reliable investment for serious applications. However, the **high cost, complexity for beginners, and potential overkill for simpler tasks** mean it is not suitable for casual users or small-scale projects.

For users who prioritize **performance, longevity, and ease of use in professional settings**, this laser is a strong recommendation. Conversely, those on a budget or working with less demanding applications would be better served by **lower-power, more affordable alternatives** from brands like Thorlabs, Ophir, or even some consumer-grade lasers (with appropriate safety precautions).

---

### **Recommendation**

- You work in **industrial alignment, optical testing, or precision metrology** and need a reliable, high-power source.

- You already use **Melles Griot components** and want seamless integration.

- You require **self-aligning technology** to simplify setup and reduce errors.

- You are willing to invest in **long-term durability and professional-grade performance**.

- You are a **hobbyist, student, or small-scale user** with a limited budget.

- Your application only requires **low-power alignment** (e.g.,

- You lack experience with **optical systems** and need a simpler, more user-friendly solution.

- You anticipate **frequent relocations** or need extreme portability.

- For **lower-cost, high-quality lasers**: Thorlabs **S1FC Series** (5mW 100mW) or Ophir s **SPL Series**.

- For **portability and ease of use**: Coherent s **Compass 215** (if available standalone) or **Thorlabs Laser Collimators**.

- For **educational or basic alignment**: **5mW 50mW red lasers** from brands like UDT or Melles Griot s lower-power models.

Ultimately, this laser is a **premium choice** for those who demand the best in optical performance and are prepared for the associated costs and complexity.

Details:

Inventory location A9DC. This laser head comes as pictured it is in great condition. See pictures for details includes the connector cable.

part #: 250m50 prices

• $500.00-$3885.99

specifications industrlasemr:

• brand: Melles Griot
• mpn: 250m-50
• model: Compass 250m-50
• part type: Laser Head

seller industrlasemr:

• rating: 98.9%
• city: Union City, California
• # reviews: 88

general industrlasemr:

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

returns industrlasemr:

• policy: No Returns

payments industrlasemr:

• other
• wallet: Apple-pay
• credit card: Mastercard

shipping industrlasemr:

• cost: $10.24
• class: Standard
• type: Calculated
• transit: 3-9 Days
• service: UPS Ground
• carrier: UPS

offer industrlasemr:

• availability: In Stock
• sold: 0
• started: March 25, 2026
• quantity: 1
• options: Ship-to-home
• best offers: True

Melles Griot 250M-50 Is Similar To:

• 007-075 Melles Griot R147359 Lot (38.6% 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 (35.6% 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 (43.2% 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 (33.3% similar) Marked very well including part...(February 28th, 2018)
• 01lag000 Melles Griot 12mm (36.6% 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 (44% 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 (41.8% 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 (38% 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 (45.2% 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 (39% 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)
• 01lao167 Melles Griot 01la0167 Lens (41.8% similar) Melles Griot 01LA0167 lens - edged to 20MM the writing on original package reads: 01LAO167. Elector Marvin is a 9-5 Mon-Fri business. 25MM this listing is for one nos Melles Griot 01LAO167 lens. Its often to late solve them if you wait. Listed for Michael. Problems are questions that were not asked ...(January 27th, 2018)