20 Jan 2014 The Gooch & Housego EM750 represents a new generation of OEM narrow-linewidth lasers. It is based on the EM650 family of integrated DFB lasers known for their ultra-low noise, stability, and tunability. The new EM750 combines these traits with a mechanism that retains all the advantages of the EM650, but reduces the linewidth to a typical value of <10 kHz.
The new EM750, based on our EM650 DFB laser, is a significant simplification in the design of a kHz laser. DFB Lasers use a diffraction grating in the active region of the semiconductor device and our EM650 DFB laser achieves 300 kHz linewidths. The EM750 stabilizes the phase noise of the EM650 with proprietary passive G&H fiber optics. The laser phase noise is significantly reduced for frequencies below ~15 MHz. Linewidths of <10 kHz are achievable sacrificing very little of the EM650 power. The first versions released are rated at 35 mW across the 1.55 micron wavelength C-Band. The phase noise reduction is not wavelength sensitive and so the EM750 can operate over the full tuning range of the DFB (~±75GHz) without compromising the linewidth, making it well suited for high-resolution laser spectroscopy.
Since the EM750 does not rely on active feedback, sensitive external cavities, or other complex opto-mechanical arrangements the design is inherently stable and highly scalable. The module is compact at 124 x 78 x 10 mm and consumes no more power than an unstabilized DFB module.
G&H believes this new laser will be the foundation for a rapidly expanding series. We have demonstrated 80 mW prototypes and expect to release a higher power version in the near future.
Product Features:
- High power
- Extremely narrow linewidth
- Tunable
- Low relative intensity noise(RIN)
- Small package size: 124 x 78 x 10mm³
For further information please contact Kevin King -
bostonsales@goochandhousego.com |
