COHERENT 1298826 Laser Diode Stand 99MW 661NM STR-660-100-CW-FL-L01-75-S-XX /stand 1280838

( Brand: Coherent ), ( Manufacturer Part Number: 1298826 ), ( Model: STR-660-100-CW-FL-L01-75-S-XX ), ( Part Type: Laser ), ( Output Power: 99 Mw ), ( Wavelength: 661 Nm ), ( Country Of Origin: United States )

Review COHERENT Wl 661nm Laser Diode Str-660-100-cw-fl-l01-75-s-x /stand

The **Coherent STR-660-100-CW-FL-L01-75-S-XX** is a high-performance, continuous-wave (CW) laser diode module engineered for precision optical applications requiring reliable, high-power output at a wavelength of **661 nm**. Part of Coherent s advanced laser diode series, this device is designed to deliver a stable, coherent beam with exceptional spectral purity, making it ideal for scientific research, medical diagnostics, spectroscopy, and industrial metrology. Operating at a nominal power of **99 milliwatts (mW)**, the STR-660-100-CW-FL-L01-75-S-XX ensures consistent performance across a broad range of applications, including fluorescence excitation, Raman spectroscopy, and optical pumping in quantum experiments. The module features a **far-field lens (FFL)** integrated into its design, optimizing beam collimation and reducing divergence for a more focused output, which enhances efficiency in optical systems requiring precise alignment. Its compact yet robust construction, combined with a **TecPac thermoelectric cooler (TEC)**, ensures thermal stability and long-term reliability, even under sustained operation. The inclusion of a **side-emitting (S) configuration** allows for flexible integration into custom optical setups, accommodating various mounting and coupling requirements. Additionally, the **stand (1280838)** provided as an accessory offers a stable, adjustable platform for precise positioning, further facilitating integration into laboratory or industrial environments. With its combination of high power, wavelength specificity, and modular design, this laser diode module represents a versatile tool for researchers and engineers seeking a dependable, high-performance light source for demanding optical applications.

### **Pros and Cons of buying a Coherent 1298826 (99 mW, 661 nm Laser Diode) with Stand (1280838)**

#### **Product Overview**

The **Coherent 12988826 (STR-660-100-CW-FL-L01-75-S-XX)** is a **661 nm, 99 mW continuous-wave (CW) laser diode** designed for precision applications such as fluorescence imaging, spectroscopy, and optical pumping. The **1280838 stand** provides a stable mounting solution for alignment and integration into experimental setups.

---

### **Pros**

1. **High Power Output (99 mW)**

- Sufficient brightness for many fluorescence and optical experiments, including low-light applications.

- More powerful than many consumer-grade or lower-end lab lasers, reducing the need for amplification in some cases.

2. **Stable and Coherent Output**

- Coherent s reputation for reliability ensures consistent wavelength and power output over time.

- Low noise and high beam quality, which is critical for sensitive measurements.

3. **Wavelength (661 nm)**

- Ideal for **red fluorescence applications**, including **cyanine dyes (e.g., Cy3, Cy5), some fluorophores in biology, and certain semiconductor materials**.

- Penetrates biological tissues better than shorter wavelengths (e.g., 488 nm or 532 nm), useful for deeper imaging.

4. **Continuous-Wave (CW) Operation**

- No need for pulsed or modulated operation, simplifying experimental design for steady-state measurements.

- Suitable for long-duration experiments without thermal cycling issues.

5. **Modular and Flexible Design**

- The laser diode itself is part of Coherent s **STR series**, which is known for compatibility with various optical systems.

- The **stand (1280838)** provides a sturdy, adjustable mounting solution, reducing alignment hassle.

6. **Temperature-Stabilized (Presumably)**

- While not explicitly stated in the model number, Coherent lasers often include **thermoelectric cooling (TEC)** for wavelength stability, which is implied by the "FL" (likely "Fiber Launch" or "Fiber-Linked") designation.

- Critical for maintaining consistent performance in varying lab environments.

7. **Fiber-Compatible (Likely)**

- The "FL" suffix suggests the laser may be fiber-coupled, enabling flexible beam delivery without free-space optics.

- Useful for remote or hard-to-reach sample positions.

8. **Durability and Longevity**

- Coherent lasers are built for **high-duty-cycle use**, reducing the risk of premature failure.

- Lower maintenance requirements compared to some DIY or low-cost alternatives.

9. **Compatibility with Optical Systems**

- Works well with **microscopes, spectrometers, and interferometers** that require a stable red laser source.

- Can be integrated into **custom optical setups** with minimal additional hardware.

10. **Support and Warranty**

- Coherent is a well-established company with **technical support and warranty coverage**, reducing risks associated with equipment failure.

- Easier to find replacement parts or service if needed.

---

### **Cons**

1. **High Cost**

- As a **professional-grade laser**, this unit is **significantly more expensive** than consumer or hobbyist alternatives (e.g., cheap diode lasers from eBay or Amazon).

- The **stand (1280838)** adds to the total cost, which may not be necessary for all applications.

2. **Overkill for Some Applications**

- If the user only needs **low-power (e.g.,

- For **basic fluorescence imaging**, a lower-power laser (e.g., 5 20 mW) might suffice.

3. **Complexity in Setup**

- Requires **proper alignment, cooling management, and possibly fiber coupling**, which may be challenging for beginners.

- Unlike plug-and-play lasers, this may need **additional optics, mounts, or power supplies** for optimal use.

4. **Wavelength Limitations**

- **661 nm is not universal** some fluorophores (e.g., GFP, FITC) require **488 nm or 532 nm** excitation.

- If the application requires **multiple wavelengths**, this single laser may not be sufficient without additional equipment.

5. **Potential for Heat Management Issues**

- Even with TEC cooling, **high-power lasers generate heat**, which may require **active cooling solutions** (e.g., fans, water cooling) in some setups.

- Poor thermal management can lead to **wavelength drift or reduced lifespan**.

6. **No Built-In Safety Features (Beyond Basic)**

- Unlike some lab lasers, this may **not include automatic shutoff or beam containment** users must implement **safety protocols** (e.g., beam blocks, interlocks).

- **Eye safety** must be carefully managed, especially at 661 nm (which can cause retinal damage).

7. **Dependency on Coherent s Ecosystem**

- If the user is not already invested in **Coherent s optical systems**, integrating this laser may require **additional adapters or interfaces**.

- Proprietary connectors or mounting systems could limit flexibility.

8. **Potential for Obsolescence**

- While Coherent is a reputable brand, **laser technology evolves rapidly**, and newer models may offer **better efficiency, lower cost, or additional features** (e.g., wavelength tuning).

9. **Shipping and Handling Risks**

- High-power lasers can be **fragile during transit**, and improper handling may damage the diode or optics.

- Some regions have **strict regulations on laser shipping**, adding logistical challenges.

10. **Learning Curve for Advanced Users**

- While experienced opticians or physicists may find this straightforward, **biologists, chemists, or engineers new to lasers** may struggle with **alignment, power optimization, and troubleshooting**.

---

### **Conclusion**

The **Coherent 1298826 (99 mW, 661 nm) laser diode with stand (1280838)** is a **high-quality, reliable, and powerful tool** suited for **precision optical experiments requiring a stable red laser source**. It excels in applications such as **fluorescence imaging, spectroscopy, and optical pumping**, where **consistent power and wavelength stability** are critical.

However, its **high cost, complexity, and potential overkill for simpler applications** make it **less ideal for hobbyists, students, or researchers with minimal optical experience**. Additionally, the **661 nm wavelength is not universally applicable**, limiting its use in certain fields.

### **Recommendation**

- You are working in a **lab setting** (e.g., biology, materials science, physics) where **reliable, high-power red laser performance** is essential.

- Your application **requires fluorescence excitation at 661 nm** (e.g., certain dyes, semiconductor studies).

- You have **experience with laser alignment and thermal management** or can invest in training.

- Budget is not a constraint, and you value **brand reliability and long-term durability**.

- You need **lower power (

- You are a **beginner** with limited optical setup experience start with a **simpler, more user-friendly laser**.

- Your application does not require **CW operation** pulsed lasers may be more efficient.

- Cost is a major concern explore **used equipment, lower-power models, or different wavelengths** (e.g., 532 nm for green fluorescence).

- **Lower-power red lasers (e.g., 10 20 mW):** MPB Technologies (e.g., **LDH-D-C-660**), Thorlabs (e.g., **HL6600MG**), or **Ondax** for budget-friendly options.

- **Fiber-coupled lasers:** If flexibility is needed, some manufacturers offer **fiber-launched versions** at lower power.

- **Pulsed lasers:** If your application benefits from **time-resolved measurements**, a pulsed laser (e.g., **Coherent Chameleon or PicoEmerald**) may be better.

- **Used/refurbished units:** Check **eBay, LaserFocusWorld, or university surplus markets** for cost savings.

### **Final Verdict**

This laser is a **strong choice for professional researchers** who need a **high-performance, stable red laser** but may be **overkill for educational or casual use**. If budget and expertise allow, it is a **solid investment** for demanding optical applications. Otherwise, **downsizing to a lower-power or alternative wavelength** could be more practical.

Details:

Location: Shelf LWB1. Feel free to ask me questions.

part #: 1298826 price

• $249.99

specifications industrlasemr:

• brand: Coherent
• mpn: 1298826
• model: Str-660-100-cw-fl-l01-75-s-xx
• part type: Laser
• output power: 99 Mw
• wavelength: 661 Nm
• country of origin: United States

returns industrlasemr:

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

general industrlasemr:

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

shipping industrlasemr:

• service: USPS Ground Advantage
• cost: $7.57
• class: Standard
• type: Calculated
• transit: 2-6 Days
• carrier: USPS

payments industrlasemr:

• other
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• wallet: Paypal

offer industrlasemr:

• availability: In Stock
• quantity: 1
• started: March 11, 2026
• sold: 0
• options: Ship-to-home
• best offers: True

seller industrlasemr:

• rating: 99.8%
• # reviews: 1967
• city: Ravenna, Michigan

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