The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Coherent 1×2 VCSEL arrays with improved electrical isolation have enhanced output power, visibility, and uniformity for injection locked operation. The current range for locked operation is as large as 0.5mA, which decreases with increasing bias.
By solving the coupled oscillator equations we study the effect of frequency detuning and asymmetric gain distribution on coherently coupled VCSEL arrays. Beam steering and parity-time symmetry breaking behavior has been predicted and experimentally observed.
Coherently coupled photonic crystal vertical cavity laser arrays have been developed and studied. Dynamic coupled mode theory is applied from the perspectives of monolithic injection locking or parity-time symmetry considerations. We have found new predicted phenomena which agrees quantitatively with theory which may enable new applications.
We compare the small signal response of 850nm oxide-confined and photonic crystal VCSEL, and show that a high bias current to threshold current ratio does not predict high bandwidth in photonic crystal VCSELs. Issues associated with increasing the VCSEL output for increased bandwidth-distance product are discussed.
Coherently coupled vertical cavity laser arrays are modeled using dynamic coupled mode theory. Beam steering, mode evolution and hopping are predicted using parity-time symmetry considerations. Mode evolution and hopping with hysteresis is reported and compared with theory and shows quantitative agreement.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.