MEPHISTO-MEPHISTO-S COHERENT | Alldatasheet

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Technical content

Mephisto is a single frequency continuous-wave solid-state laser. It features the combination of optical properties unmatched by any other commercial product, such as a uniquely narrow linewidth of 3 kHz or extremely low noise (-140 dB/Hz RIN). Mephisto is available at power levels up to 2 W at 1064 nm. Mephisto S is a cost-effective version available at 200mW fiber coupled model. The Mephisto family is based on the widely recognized monolithic Nd:YAG crystal in Non-Planar Ring Oscillator (NPRO) configuration and is further improved by our acclaimed Noise Eater (NE) technology. The laser is simple to stabilize in tem- perature and easy to fine-tune by using an integrated PZT. Mephisto is the laser of choice for some of the most demand- ing low noise applications like atom cooling and trapping, gravitational wave studies, optical metrology, free space optical communications, and quantum optics. Features & Benefits

  • Monolithic non-planar ring oscillat or (NPRO) technology for ultr a-stable and narrow linewidth
  • Extr emely long coherence length
  • Noise Eater – activ e intensity noise r eduction technology
  • User-installed, turn-k ey operation
  • Low noise contr ol electronics

Applications

  • A tom Trapping and Cooling
  • Gr avitational Wave Studies
  • Laser-based Metr ology
  • Laser Injection Locking and Seeding
  • Optical F requency Standards
  • Quantum Optics (optical tr apping, optical lattice, squeezing)
  • Nonlinear Optics Pump Sour ce (SHG, DF G, OPO)
  • Optical H eterodyning and Coher ent Communication
  • LIDAR Ultra-Narrow Linewidth CW DPSS Laser

500 FC 500 1000 2000 200 FC

Output Power1 (mW) 300 500 1000 2000 120 Wavelength (nm) 1064 Operational Mode Continuous-wave Spatial Mode TEM00 (M2 <1.1) Beam Roundness <1.2 Thermal Tuning Coefficient (GHz/K) -3 Thermal Tuning Range (GHz) 30 Thermal Response Bandwidth (Hz) ~=1 Mode Hop-Free Tuning Range 2 ETR STR STR STR ETR PZT Tuning Coefficient (MHz/V) ~=1 PZT Tuning Range (MHz) ±65 PZT Response Bandwith (kHz) 100 Emission Spectrum Single-frequency Spectral Linewidth (kHz) ≤3 kHz range Coherence Length (km) >1 Frequency Stability 3 (MHz/min.) ~=1 ~=2 Relative Intensity Noise (RIN) (dB/Hz), f >10 kHz <-140 <-120 Intensity Noise, 10 Hz to 2 MHz (% rms) <0.03 <0.2 Laser Head Size (L x W x H) 200 x 150 x 113 mm (7.9 x 5.9 x 4.4 in.) 175 x 121 x 97 mm (6.9 x 4.8 x 3.8 in.) Laser Controller Size (L x W x H) 345 x 340 x 135 mm (13.6 x 13.4 x 5.3 in.) 235 x 340 x 90 mm (9.25 x 13.4 x 3.5 in.) Options Fast Amplitude Modulation (FAM) is available with Mephisto 500 and 2000 models upon request Mephisto/Mephisto S Ultra-Narrow Linewidth CW DPSS Laser SPECIFICATIONS 1 F iber Coupled (FC) models have >60% coupling efficiency. 3 Measur ed at constant room temperature.

-170 -160 -150 -140 -130 -120 -110 -100 10k Frequency (Hz) 100k 1M 10M RIN (dB/Hz) Free Running Noise Eater Active Detector Noise 102 103 104 105 106 107 Frequency (Hz) 10 1001 k1 0k Linear Spectral Density (Hz/ Hz) Frequency (THz) 281.605 281.610 281.615 281.620 281.625 281.630 281.635 281.640 281.645 Temperature (°C) 25 30 35 40 45 Single-frequency Mode Hop Frequency (THz) 281.615 281.620 281.625 281.630 281.635 281.640 281.645 281.650 281.655 281.660 Temperature (°C) 25 30 35 40 45 Single-frequency Mode Hop Relative Intensity Noise 1 Frequency Noise1 Standard Tuning Range (STR) Extended Tuning Range (ETR) 1 Only for Mephist o product line. Mephisto/Mephisto S Ultra-Narrow Linewidth CW DPSS Laser

Coherent, Inc.,

5100 Patrick Henry Drive Santa Clara, CA 95054

p. (800) 527-3786 | (408) 764-4983 f. (408) 764-4646 tech.sales@coherent.com www.coherent.com Coherent follows a policy of continuous product improvement. Specifications are subject to change without notice. Coherent’s scientific and industrial lasers are certified to comply with the Federal Regulations (21 CFR Subchapter J) as administered by the Center for Devices and Radiological Health on all systems ordered for shipment after August 2, 1976. Coherent offers a limited warranty for all Mephisto Lasers. For full details of this warranty coverage, please refer to the Service section at www.coherent.com or contact your local Sales or Service Representative. MC-013-13-0M0522Rev.H Copyright ©2022 Coherent, Inc. Mephisto Mephisto S 111.0 mm (4.37 in.) 55.0 mm (2.17 in.) 95.0 mm (3.74 in.) (4X) Ø 4.5 mm (0.18 in.) 100.0 mm (3.94 in.) 61.0 mm (2.40 in.) 97.2 mm (3.83 in.)97.2 mm (3.83 in.) 37.5 mm (1.48 in.) Laser Aperture Emission LED Side View Top View Front View 73.0 mm (2.87 in.) 113.0 mm (4.45 in.) 75.0 mm (2.95 in.) Laser Aperture Emission LED Side View Top View Front View Mephisto/Mephisto S Ultra-Narrow Linewidth CW DPSS Laser VISIBLE A ND INVISIBLE LASER RADIATION. AV OID EYE OR SKIN EXPOSURE TO DIRECT OR SCATTERED RADIATION. CLASS IV LASER PRODUCT . PER EN 60825- 1 l 1.06 to 1.07 µm 1.30 to 1.40 µm Max. Power 0.8W ISO 9001 Registered