Surplus Used Tunable Laser Sources ( TLS ) from Agilent, HP, Ando, Anritsu and more. TLS are tested and calibrated before shipping. We have a good in-stock inventory of Agilent 81480A and Agilent 81689A as well as the older Agilent 8168D in various configurations. Ask us anytime for help in selecting the proper tunable laser.