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Mendocino Laser

Photonics.com
Jan 2010
Calmar Laser Inc.Request Info
 
All-Fiber-Based OEM Module Laser
SUNNYVALE, Calif., Jan. 13, 2010 – Calmar Laser Inc. has released the all-fiber-based Mendocino femtosecond OEM module laser that generates average output power of 50 mW with 780-nm ultrafast pulses and is supplied in a compact and rugged package. Pulse width is <0.1 ps, and pulse energy is >1 nJ at 50 MHz, with peak power of 10 kW. The all-fiber design provides good stability and reliability in harsh environments, and years of hands-off use.

The second-harmonic-generation passively mode-locked fiber laser in the C-band requires no electrical driver and no adjustment. The seed laser uses a proven semiconductor saturable absorber approach to ensure consistent and reliable mode-locking, rather than a nonlinear polarization rotation design, which would be intrinsically sensitive to temperature, time and other external disturbances, resulting in inconsistent operation at start-up and intensive operator attention.

The device measures 19.7 × 12.7 × 7.0 cm and runs from a 5-V supply. The laser head measures 15.2 × 12.7 × 6.0 cm and requires a driver supply at 34.0 × 30.0 × 9.0 cm. Smaller driver units are available upon request. Benchtop and rack-mount configurations are available for laboratory use.

The laser delivers near transform-limited, linearly polarized and radio-frequency synchronization output. Fiber optic technology enables a short pulse width, high peak power and good beam qualities. The steady laser pulse output characteristics are determined by soliton effects of the fiber laser cavity. Fiber gain, dispersion and nonlinear effects are stable over time, temperature and other external disturbances.
Calomar-Laser.jpg
Spectral width is ~12 nm, optical output is a free-space collimated beam with M2 <1.2, beam diameter of <2 mm and pointing stability of <20 µrad. Polarization extinction ratio is >18 dB, and operating temperature is from 15 to ~35 °C.

The laser has a gain medium based on a doped optical fiber pumped by a telecom-qualified semiconductor laser. It delivers low timing jitter of 60 fs and low amplitude noise. The repetition rate can be specified from 10 to 50 MHz, with polarization-maintaining output. Splice fused fiber optic connections provide long term stability, and long thin fibers accommodate simple passive cooling methods.

Applications include seeding Ti:sapphire amplifiers, biophotonics, terahertz radiation, materials characterization, optical metrology and multiphoton imaging microscopy.

For more information, visit: www.calmarlaser.com  

Calmar Laser Inc.
755 N. Pastoria Avenue
Sunnyvale, CA 94085
Phone: (408) 733-7800
Fax: (408) 733-3800


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GLOSSARY
photonics
The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
saturable absorber
A laser dye whose absorption coefficient drops at high levels of incident radiation. The phenomenon is often called bleaching.
terahertz radiation
Electromagnetic radiation with frequencies between 300 GHz and 10 THz, and existing between regions of the electromagnetic spectrum that are typically classified as the far-infrared and microwave regions. Because terahertz waves have the ability to penetrate some solid materials, they have the potential for applications in medicine and surveillance.
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