Locations and Directions


20 New England Business Center Drive

Andover, MA 01810

Voice: 978-689-0003

Fax: 978-689-3232

Andover has been the headquarters and backbone of PSI since 1989. It’s the largest and most extensive of our locations, hosting 68,000 square feet of office and laboratory space. In addition to our technical capabilities, the Andover site is also home to our accounting, contracts, and technical publications departments as well as our prototype manufacturing facility.

A 6,000 sq. ft. satellite facility in nearby Haverhill, MA is home to our composites fabrication and laser machining operations as well as a staging and indoor experimental activities supporting our vehicle-based standoff trace explosives and radiation detection capabilities.

PSI Andover


6652 Owens Drive

Pleasanton, CA 94588

Voice: 925-743-1110

Fax: 925-460-0110

The Pleasanton, CA Operations of PSI, established in 1991, occupy 2,600 sq. ft. of office and experimental space. The staff in Pleasanton work extensively in the area of nonlinear optics and laser-based chemical sensing. They have developed new mid-infrared laser sources based on guided-wave frequency conversion in periodically-poled lithium niobate (PPLN). These sources are employed as key components of gas sensors for a variety of applications including atmospheric trace gas measurement and industrial process control.


Directions to PSI Andover, MA

Directions from Logan Airport: Out of Airport bear left; follow signs to Sumner Tunnel/Boston to Route 93 North. Take exit 45 (River Road). Turn left at the light onto River Road. Take your immediate left onto Old River Road. Take your third right to New England Business Center. PSI is the second building on your left.
Alternate Route (in case tunnel is closed or traffic is backed up): Take Route 1A North to Route 60 West to Route 1 North; follow to Route 95 (128) South to Route 93 North. Proceed as above.
Directions from Manchester, New Hampshire Airport


Directions from Manchester Airport: Start out going northwest toward Brown Ave. Turn slight right onto Brown Ave to entrance onto I-293 South. Take I-293 South/Route 101 East ramp toward Concord/Salem/Portsmouth. Merge onto I-93 South. Travel on I-93 South for ~23 miles. Take the River Rd. exit #45 toward S. Lawrence. Bear right off ramp. Go through one set of lights and at the second set of lights take a left onto Old River Rd. Take your third right to New England Business Center. PSI is the second building on your left.

Directions from NH

Hotel/Motel Accommodations

Homewood Suites

4 Riverside Drive

Andover, MA 01810

(978) 475-6000

Wyndham Andover

123 Old River Road

Andover, MA 01810

(978) 975-3600

Courtyard Marriott

10 Campanelli Drive

Andover, MA 01810

(978) 794-0700

La Quinta Inn

131 River Road

Andover, MA 01810

(978) 685-6200